OF SOUTHERN INDIA. 41 



20.— C. angnstafa [see ZiUeHxi'DeviVseh. Akad., Wien, 1SG5, xiv, pt. ii, p. 112). D'Orbigny 

 calls this species, which is a true Corbiila, C. siib-angustata, and .reserves tlie former name f(jr the 

 tertiary My a? angustata. Sow. This last is, however, certainly not a Corhula, though I would not 

 venture to assert positively to what genus that shell belongs without examining the original speci- 

 men itself; it may he a Himella or Corhulomi/a, but the cartilage process appears to be similar to 

 that of Cry2ilomya, to which genus it also probably belongs. 



21. — C. suhstriatula is a true Corhula. 



22. — C. Ihieata of Miiller is more likely a Corbulomya, than a Corhula; it is rather compressed 

 and nearly equivalve. 



23. — C. ohtusa of the same author is also a sub-equivalve S2)eeies, and more probably 

 belongs to one of the sub-genera of Neeera, than to Corhula. Bosquet considers it to be a Poromya, 

 (Foss. flora and fauna v. Limb., &c., in Staring's Bodem. v. Nederland). 



24. — C. omlis Pietet suggests to be a Thracia, but unless the original specimen be examined 

 nothing positive can be said of it. Morris does not even accept the species in his list of British 

 fossils. 



25. — C. velata, Schafhsutl, (Bayern's Leth. Geog., p. 176), may be a valve of a Corhula, but 

 it would be labour in vain to theorize on that author's ideas of geological formations. 



26-27. — C. caudata, Nillson, and C. come/a, Coq., belong to all appearance to Neara, but the 

 form which Goldfuss, (Petr. Germ., p. 2.51, pi. 151, fig. 17), describes and figures as a species 

 identical with C. caudata of Nillson is certainly quite a diff'ereut one. 



28-29. — Conrad describes from Palestine, in the official report of Lynch's Expedition, C. suhlineo- 

 laia and sijriaca. Fraas (Wiirtemb. Jahresh. xxiii, 1867, p. 236), considers the former as identical 

 with C. striatula. Sow. The same author also states that Conrad's C. congesta, which is said to have 

 been without any reason referred to the Jurassic period, is based upon a cast not admitting of specific 

 determination. I have, I am sorry to say, not as yet been able to get access to Conrad's "official 

 report." 



30-40. — Meek in his Check-list of Inverteb. cretaceous fossils of North America (Smiths. Misc. 

 Coll., No. 177, 1864,) quotes Corh. crassimarginata, crassiplicata, Eufalens'is, Foulkei, Graysonensis, 

 Hillgardii, inornata, occidentalk, suhcoiiqiressa, Tuomegi, and Corbulamella gregarea. I have not 

 been able to ascertain whether Gabb's C. mh-caudata is to be retained as an independent sjiecies. 



41-46. In the Paloeont. of California (vol. i and vol. ii, p. 233, &c.,) Gabb describes — 

 ? C. primorsa, C. Trasiil, cuUrlformis, pari lis, Ilornii, and alaformis. The last but one sjjecies may 

 prove to be a Corhuloniya, and the first is also posteriorly peculiarly pointed, but it may be only a 

 young valve of a Corhula. 



47-48. — C. Chilensis, from Chili, and C. Columhiana, from Columbia. 



49-53. — From India I shall have to add the following five sjjecies ; C. striatuloides, parsura, 

 cancelUfera , minima, and exulans ; the three first belong to the Trichinopoly, the fourth to the Arria- 

 loor, and the fifth to the Ootatoor group. 



NEEERA. 



54-57. — Pietet and Campiche quote in the " Paleontologie Suisse" N. Sahaudiana, SanctcB- 

 crucis, caudata, and Qnillanensis, to which N. cometa, [Corhula apud Coq nan d, Monog. fitage 

 Aptien, 1865, p. 102,) has most likely to be added. 



57a. — Neara hrevirostris, A 1th, sp. {Nucula id., Alth) is described from the upper cretaceous 

 deposits near Lemberg (Desc. des Moll. foss. de la craie des ... Lemberg, &e., par E. Favre, Geneve 

 1869, p. 103). 



58. — Bosquet (in Staring's Bodem v. Nederland) names a Neara longicauda, but I have not 

 yet met with the description of the species. 



Eichwald (Leth. ross., 1867, xi livr., p. 743,) describes from "gres verts" near Orenbourg 

 a Neara tenuis, but the shell has evidently nothing to do with that genus ; it is either a Leptomya, 



Ii 



