v1 CONTENTS, 
NUMBER LI. 
Page 
XLI. Natural History Notes from H.M. Indian Marine Survey 
Steamer ‘Investigator, Commander R. F. Hoskyn, R.N., com- 
manding.—Series II., No. 1. On the Results of Deep-sea Dredging 
during the Season 1890-91. By J. Woop-Mason, Superintendent 
of the Indian Museum, and Professor of Comparative Anatomy in 
the Medical College of Bengal, and A. Aicock, M.B., Surgeon 
I.M.S., Surgeon-Naturalist to the Survey. (Plates XIV. & XV.).. 265 
XLII. Description of a new Genus and some new Species of 
Tleterocera from Central America. By Herpert Druce, F.LS... 275 
XLIII. Observations on the Dentition of Mammals. By Dr. W. 
EGUICENT AT: <6 o.< in seit sucatsioinmeties atuas Palak Rites met eae eee 279 
XLIV. The Dentition of Didelphys: a Contribution to the 
Embryology of the Dentition of Marsupials. By Dr. W. Kixenruan 285 
XLV. Descriptions of new Genera and Species of Pyralide con- 
tained in the British-Museum Collection. By W. Warren, M.A., 
IBS. goiaieiare tee seeis.clele 90 Gla ae gual Sishese eieeayeats @attueee fee 294 
XLVI. Notes on the Paleozoic Bivalved Entomostraca.— 
No. XXX. On Carboniferous Ostracoda from Mongolia. By T. 
Rupert Jones, F.R.S., and James W. Kirxsy, Esq. (Plate XVI) 302 
XLVII. Notes on the Variation of the Genus Arion, Fér. By 
Watrer E. Coininer, Assistant Demonstrator in Zoology, St. 
Andrew's University: 5... dmees.0).st alec etces s AC une ee ee 307 
XLVIIL. Notes on Dr. W. Kiikenthal’s Discoveries in Mammalian 
Dentition,” By Orprieny TeoMAs 27 22... oes tan eee 308 
XLIX. On some undescribed Cicadide, with Synonymical Notes. 
By We Li Is tAN Ds. S yactiiers 6 asm.als oie secinge on andelayere Sana eee 318 
L. Contributions towards a General History of the Marine 
Polyzoa, 1880-91.—Appendix. By the Rey. Tuomas Huncxks, 
BAe p Hic eu elias fas Jo sine Zhoadh al oye is weitovaiencyd oycs tells dls <kas o ene a ee 527 
New Books :—Catalogue of the Type Fossils in the Woodwardian 
Museum, Cambridge. By Henry Woops, B.A.,F.G.S. With 
a Preface by T. M*7Kenny Hveuss, M.A., F.R.S.—Delagoa 
Bay : its Natives and Natural History. By Ross Monrerro,. 
—lLa Plume des Oiseaux : histoire naturelle et industrie. Par 
Lacrorx-Danuiarp.—L’amateur d’Oiseaux de Voliére. Par 
TIENE I MORWAU, 4 cuales wine. oo eenguni ac se are 384—336 
Note on Mr. Minchin’s Paper on Ascetta, by R. v. Lendenfeld; 
Gymnorhynchus reptans, Rud., and its Migration, by M. R. 
Moniez; On Coral-Reefs of the East-African Coast, by Dr. A. 
Ortmann, of Strassbure) 26 to se.2 eee cee see ee 337—339 
NUMBER LIIL. 
LI. On some new Species of Histeride. By G. Lewis, F.L.S... 341 
LI. Natural History Notes from H.M. Indian Marine Survey 
Steamer ‘ Investigator,’ Commander R. F, Tloskyn, R.N., com- 
manding.—Series II., No. 1. Oa the Results of Deep-sea Dredging 
