# Transactions of the Linnean Society of London/Volume 20

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THE
TRANSACTIONS
OF
THE LINNEAN SOCIETY
OF
LONDON
VOLUME XX.
LONDON:
PRINTED BY RICHARD TAYLOR, RED LION COURT, FLEET STREET:
SOLD AT THE SOCIETY'S HOUSE, SOHO-SQUARE;
AND BY LONGMAN, BROWN, GREEN AND LONGMANS, PATERNOSTER-ROW;
AND WILLIAM WOOD, TAVISTOCK-STREET, COVENT-GARDEN.
MDCCCLI.
C O N T E N T S.
PART I.—1846
I. On the Development of the Ovulum in Avicennia. By the late William Griffith, Esq., F.L.S. &c. Communicated by R. H. Solly, Esq., F.R.S., F.L.S. &c page 1
II. Some Observations upon the Structure of two new Species of Hectocotyle, parasitic upon Tremoctopus violaceus, D. Ch., and Argonauta Argo, Linn. ; with an Exposition of the Hypothesis that these Hectocotylae are the Males of the Cephalopoda upon which they are found. By A. Kolliker, Professor of Physiology and Comparative Anatomy in the Uni- versity of Zurich. Communicated by Robert Brown, Esq., V.P.L.S. &c 9
III. Descriptions of some unpublished Species of Plants from North-Western India. By M. Pakenham Edgeworth, Esq., F.L.S., Bengal Civil Service 23
IV. On the Indian Species of Balanophora, and on a new Genus of the Family Balanophoreae. By the late William Griffith, Esq., F.L.S. &c. 93
V. On Agaricus crinitus, Linn., and some allied Species. By the Rev, M. J. Berkeley, M.J., F.L.S. &c 109 VI. Caricis Species novce, vel minus cognitce. Auctore Francisco Boott, M.D., S.L.S. &c 115
VII. Remarks on the Examination of some Fossil JVoods, which tend to elucidate the Structure of certain Tissues in the recent Plant. By Edwin John Quekett, Esq., F.L.S. &c 149
PART II.—1847.
IX. An Enumeration of the Plants of the Galapagos Archipelago ; with Descriptions of those which are new. By Joseph Dalton Hooker, Esq., M.D., F.L.S. S^c page 163
X. On the Vegetation of the Galapagos Archipelago, as compared with that of some other Tropical Islands and of the Continent of America. By Joseph Dalton Hooker, Esq., M.D., F.R.S., F.L.S. <^c. . . . 235
XI. On the Ainbrosinia ciliata of Roxburgh. By the late William Griffith, Esq., F.L.S. 8sc. Communicated hy R. H. Solly, Esq., F.R.S., F.L.S. &c. 263
XII. On the Aqueous Vapour expelled from Bee-hives. By George Newport, Esq., F.R.S., Fellow of the Royal College of Surgeons, Sfc. Communicated by the Secretary 277
XIII. Note on the Generation of Aphides. By George Newport, Esq., F.R.S., Fellow of the Royal College of Surgeons, &c. Communicated by the Secretary 281
XIV. Description of the Asafoetida Plant of Central Asia. By Hugh Falconer, M.D., F.L.S. &c 285
XV. Account Gamoplexis, an undescribed Genus of Orchideous Plants. By Hugh Falconer, M.D., F.L.S. &c 293
XVI. On the Natural History, Anatomy and Development of the Oil Beetle, Meloe, more especially of Meloe cicatricosus. Leach. By George Newport, F.R.S., F.L.S., Fellow of the Royal College of Surgeons, S^c. — First Memoir. The Natural History of Meloe 297
PART III.—1851.
XVIII. Note on Samara Iseta, Linn. By G. A. Walker-Arnott, Esq., LL.D.,F.L.S. &c., Regius Professor of Botany in the University of Glasgow page 359
XIX. On a new Genus of Plants of the Family of Burmanniaceae. By John Miers, Esq., F.R.S., F.L.S. &c 373
XX. On Jansonia, a new Genus of Leguminosse, from Western Australia. By Mr. Richard Kippist, Lihr. L.S. &c 383
XXI. On the Structure of the Ascidia and Stomata of Dischidia Rafflesiana, Wall. By the late William Griffith, Esq., F.L.S. <Sfc. Communicated by R. H. Solly, Esq., F.R.S., F.L.S. &c 387
XXII. On the Impregnation of Dischidia. By the late William Griffith, Esq., F.L.S. 8fc. Communicated by R. Brown, Esq., V.P.L.S. &c. . .391
XXIII. On Athalaraia, a new Genus of Marcliantiese. By Hugh Falconer, Esq., M.D., F.R.S., F.L.S., Superintendent of the Hon. East India Company s Botanic Garden at Calcutta, &c 397
XXIV. On the early Stages of Development of Lenianea fluviatilis, Agardh. By G. H. K. Thwaites, Esq., Lecturer on Botany and Vegetable Physiology at the Bristol Medical School. Communicated by the Rev. M. J. Berkeley, F.L.S. 399
XXV. On Meliantheae, a new Natural Order, proposed and defined by J. E. Planchon, Docteur-es-Sciences. Communicated by the Secretary . 403
XXVI. On the Formation and Use of the Air-sacs and Dilated Trachece in Insects. By George Newport, Esq., F.R.S., F.L.S. &c. . . .419
XXVII. On the Anatomy and Affinities of Pteronarcys regalis, Newm. : with a Postscript, containing Descriptions of some American Perlidse, together' with Notes on their Habits. By George Newport, Esq., F.R.S., F.L.S. &c 425 ​XXVIII. Descriptions of some new Species of Athyreus, a Genus of Lamellicorn Beetles. By J. O. Westwood, Esq., F.L.S. &c page 45H
XXIX. Some Account of an undescribed Fossil Fruit. By Robert Brown, Esq., D.C.L., F.R.S., V.P.L.S 469
XXX. Extracts from the Minute-Book of the Linnean Society of London 477
Catalogue of the Library of the Linnean Society 483
List of Donors to the Library of the Linnean Society 499
Donations to the Museum of the Linnean Society 505