"When we open the body of a drone, either from above or from below, "we notice a substance formed from the assembling of several parts, often of "a white color surpassing that of milk: if we spread out this substance, we "find it composed principally of four oblong bodies; the two largest of these "bodies are fastened to a sort of tortuous cord which Swammerdam called "_the root of the penis_ (Plate II fig. 1), and he gave the name of _seminal_ "_vesicles_ s s, to the two white, long bodies which we have just mentioned. "Two other bodies, oblong like these, but with a diameter only about half "of the others, and shorter, are called by the same author _deferent vessels_ "d d. Each of these communicates with one of the seminal vesicles, near the "spot q q, which the latter are joined to the tortuous duct r; at the other "end of each of these deferent vessels, a slim duct is found x x, which, after "a few curves, ends in an enlarged body t, a little larger, but difficult to "separate from the trachea which surround it. Swammerdam considers these "two bodies as the testicles. So we have two bodies of considerable volume "which join with two larger and longer ones still longer and larger. These "four bodies have a cellular tissue filled with a whitish liquid, which may "be forced out by pressure. The long and tortuous duct r, to which the "two largest bodies are fastened, which are called the seminal vesicles, is "undoubtedly the duct through which the milky liquid can escape. After "several turns it widens or rather terminates in a sort of bladder l, i, a "fleshy bag. This part is more or less stretched and more or less flat in "different drones; by giving it the name of _lenticular body_ or _lentil_, we de- "scribe its appearance in all the drones whose organs have been hardened "in alcohol. This bag l, i, is then a rounded lentil, half of whose circum- "ference is bound by two scaly plates e i, e i, of chestnut color which follow "the curves of its contour. A little whitish cord, on the border of the lentil, "is visible and separates them from one another. As this lentil is oblong "we will give its two ends the names of posterior and anterior. The an- "terior end l, nearest to the head, is the one into which the duct r is in- "serted, coming from the seminal vesicles. The posterior end i, nearest to "the anus gives rise to the two scaly plates e i, e i, each of which widens "so as to cover a part of the lentil. Below the spot where each of these "scaly plates is widest, there is a notch which makes two rounded points of "uneven lengths, the longer being upon the circumference of the lentil. "Besides these two plates, there are two others n n, Fig. 2, of the same color, "but narrower, and shorter by half, each of which is near the others, with "their end at the same end as the others, at the posterior part of the lentil, "fig. 2. The rest of the lentil is white and membranous; at its posterior "end is a tube k, also white and membranous, the diameter of which fs "difficult to determine, for the membranes which compose it are visibly "folded. At one side of this tube a fleshy body, p, is fastened which re- "sembles a palet, one side concave with plaited edges; the other side con- "vex; in some cases the plaits turn up and their edges project beyond the "circumference; they form rays which give the palet the appearance of "pretty work. This palet lies upon the lentil, and rests upon it on its con- "cave side, but it does not adhere to it. "The parts which we have just mentioned, and which are the most "visible in the body of the drones, are not those that emerge first out of the "body, nor those that are most remarkable, outside of the body. If we con- "slider the tube k, or the sac which begins at the posterior end of the lentil "which separates the two scaly plates, we can easily see the part, u, which "we have named the arch; one may see five wooly bands disposed crosswise,"they are of tawny color, while the rest is white. This arch even seems to "be outside of the membranous tube, for it is covered only by a very transparent membrane; at one end it almost touches the lenticular body while "at the other it terminates where the membranous canal joins the membranes m, which are wrinkled and yellowish, making a sort of sac resting "upon the edges of the opening from which the generative organs are to "issue. The tawny-colored membranes mentioned are those which pressure "forces out first, they form the elongated mass the end of which resembles "a wooly mask. Lastly, this sac, composed of tawny membranes, holds two "appendices c c, of reddish yellow color, even red to the tip; and these are "the appendices which project to the outside in the shape of horns. "When we press the belly of a drone gradually, with care, we cause "other parts also to be ejected; these parts show themselves on the opposite "side from their position in the body. The surface of these parts, which "was the inside, becomes the outside; the same thing happens to them as "to a stocking which is drawn inside out. If the opening of the stocking "which we try to turn inside out was fixed upon a hoop, and if ve began "to ever it by beginning at the part nearest the opening, so that the heel "and toe came last, we would have in this version of the stocking an exact "illustration of the manner in which the organs of the male bee are turned "to project outside. "When we know the position of these parts in the interior of the body, "It is easy to figure the order in which they must appear at their ejection. "The tawny sac, which is nearest the opening, appears first and as a portion "of its interior part is woolly, it provides the woolly mask. The base of the "horns then show themselves; the arch next. When the arch is entirely "extruded, it is necessary to increase the pressure to bring out other parts; "for it is through the end of this arch that the lenticular body passes which "then assumes a very lengthened appearance. In spite of this, it is easily "recognized, and it is evident that it has been everted inside out, since we "see, upon one of its sides, the scaly plates already described, and that the "side on which they are seen is concave, while when in the body of the "drone it is convex." The lenticular body 1, i, covered with the scaly plates i e, i e, is the only one of the parts described by Mr. de Reaumur which we have found within the vulva of the queens. The canal r, which Swammerdam has called the _root of the penis_, is torn after foundation; we saw fragments of it at the place where it joins the end 1 of the lentil, near its forward extremity, but we have never found any trace of the tube k, made of folded membranes, nor of the pilated palet p, which adheres to this tube, and which Swammerdam had called the penis, on account of its resemblance to that of other animals, although he did not believe that this part, which is not perforated, could fulfill these functions. It must be that the tube k, and all that belongs to it break apart at 1, near the posterior end of the lentil, and that these parts remain within the body of the male. When we dissect a drone, we see, at the upper end of the canal r, two very apparent nerves which are inserted in the seminal vesicles, and divide among them as well as in the penis a number of ramifications.