t7 ([Reprinted from Insecutor Inscitiae Menstruus, Vol. XL Nos. 7-9, 1923.]

AN UNDESCRIBED SPECIES OF PRIONOTA FROMJAVA(Diltera, Tipulidap)
Bv CHARLES P. ALEXANDER
The following undescribed speciesol I'ri,nota van der Wulp
\4'as included in some extensive collections of crane-flies
belo'nging to the Paris Museum and sent to me for determination through the kind interest of Mons. Eugene S6guy.
The unique type is in the collection of the Paris Museum.
Prionota s6guyi, new species.
General coloration obscure orange, the praescutum withthree slightly darker stripes; wings pale brovrn, the coastal
region darker ; cell M, short-petiolate; basal abdominal tergites
not conspicuously brightened.
Female.-Length about 2? mm.; wing, 20-21 mm.
Head black, the genae light gray pruinose. Antennae black,the bases of flagellar segments 1 to 4 indistinctly ferruginous.
Mesonotum obscure orange, the praescutum with threedarker, rust-brown stripes, the broad median stripe entire(narrowly divided by a pale vitta in P. ni,griceps Wulp).
Wings weakly tinged with brown, the costal region with darkbrown, this darkened area including cells C, Sc, rsf Rr, znd, R,and Rr; stigma still darker brown; r,ving-roo'tpale brownish
yellow ; a brown wash in cell M, and another along vein znd,A.
Venation ; Cell IW, with a petiole that is approximately equal
to m; m-cw distinct.
Abdominal tergites dark brorvn, very inconspicuously variegated with ferruginous, the basal segments not conspicuously
Lrighter than the terminal segments; basal sternite-q ferruginous, margined caudally and laterally rvith dark brown;
terminal sternites uniformly dark.

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132

INSECUT OR INSCIT I.4

M ENSTR U U S

Habitat.-Java.
Holotype, Q, Soekaboemi,1919 (E. S6guy).
This interesting crane-fly is named in honor of Mons.
Eugene S6guy.
The genus Prionota was erected by van der Wulp (1885)
for the supposedly undescribed species,P. nigriceps (Java).
As has recently been pointed out by Edwards, this species isdoubtfully distinct frorn the Ctenophora ranthonrelaena
Walker (1848). In 1912 Enderlein describeda distinct species
from Sumatra under the name Prionocera flaviceps. In 1921
Enderlein erected the genus Plocirnas for a new species fromsoutheastern China, described as P. rnagnificus. To this genus
I would refer the Pselliophora serraticornis Brunetti (1911),and P. ? elongata Edwards (1913), both from Ceylon. Mr.
Edwards (in litt.) informs me that the two speciesare synonymous. We thus have two closely allied genera, Prionota witha single serration on the lower side of each flagellar segment,
Plocivnas with two such serrations, one being basal, the otherapical. The synonymy of the two genera may be outlined asfollows:
Prionota van der Wulp; Notes Leyden l\4useum, 7 : I-2:.
1885.
P. nigricefsvan der Wulp; l, c., ?: 2-3; 1885. (Doubtfullydistinct from the next).
P. ranthomelaena (Walker);
List. Dipt. Brit. Mus., 1:??
(Ctenofhora); 1848.
P. flwiceps (Enderlein) ; Zool. Jahrb, Syst., 3Zi 28-29 (Prionacera); t912.
PlocimasEnderlein ; ZooI. Anzeig., 52: 226; 792L.
P. magnificusEnderlein; l. c., 52: 226-227;1921.
P, serraticormis(Brunetti); Rec. Ind. Mus., 6:242 (Pselliophoro);1 911 .

Syn. P. elongata (Edwards);

L2:202 (? Pselliophora); 7973.

Ann.

Mag. Nat. Hist.,(8)