lOG CRETACEOUS PELECYPODA 



18(;_ Y_ crelacea, tl'Orb., (ibiJ,) is " ovalo-compressa, aiilice breri, poslice angvlata" — sic! 



187. Y, HaUii, Gabb, 1S6;3, (olim F. Orhignyana, Gabb, iion id. Forbes), Proc. Am. Ph. 



Soc, vol. viii, p. 235. 



18S. Ciiprlmeria sj.issa, Conrad, (Am. Journ. Conch., v, [1869], p. 44), from New Jersey, 



(a very insufficient cast) . 



189. — Gemma ? crelacea, Conrad, (ibid, v, p. 96,) is from Mis.si.ssii)pi. 



T/tetironia, (vide Catalogue des " Thetis connues," Pictet et Campiche iu Pal. Suisse, 4™' ser., 

 .3""^ part., p. 209) . 



190-198. — Tlielis Renevieri, minor, Imvigala, Prestcnsis, major, Genevensis, Sanctm-crucis, 

 Rotomagensis, and undulata. 



Corbnhi giganlea, Sow., often referred to Thefironia, is most likely a Porowj^a, and Corlula 

 Imvigata, Sow., suggested to belong to the same genus, will be noticed as the type of a new genus, 

 Fimbriella, in the family LuciNiDyE. 



199. — !> Th. elongafa, Gabb, (Pal. Calif., ii, p. 186, pi. 30, fig. 80,) seems rather to have the 

 form of a Crassatella than that of a Tlietironia. 



The following is the list of our South Indian cretaceous species. 



200-210. — Baroda \_Icanotia r\ Pondicherriensis, Forbes, sp., Baroda {^Icanotia'] elicila, 

 Stol., Cyiherca plana, Sow., C. Garudana, Stol., C. Arcolensis, Forb., sp., C. lassula, Stol., 

 Ci/lh. [Callisla'] solitaria, Stol., C. [Ca//.] sculplurala, Stol., C. \CaU?\ fabulina, Stol., C. [Call.] 

 laciniata, Stol., C. [CalLI minutula, Stol., C. \_Call.'] vagrans, Stol., C. [Caryaiis] turgidula, 

 Stol., C. [Car.'] Telugensis, Stol., C. [Car.] intercisa, Stol., Cyprimeria analoga, Forbes, sp., 

 Cyp. Oldhamiana, Stol., Cyp. obesa, d'Orb., sp., Eriphgla lenticularis, Goldf., sp., Eriphyla Forbe- 

 siana, Stol., Er. diversa, Stol. 



Of doubtful species tiiere are large numbers. Pictet and Campiche point out several, 

 and many more could be added ; but as I have not examined authentic specimens, and as the 

 fiwures do not allow any better conclusions to be made than those upon record, I shall not notice 

 them further, I may only mention the following — 



Cyiherea Herzogii, Hausmann, in Goldf. Petr. Germ., ii, p. 239, ^\. 149, fig. 10. Judging 

 from the general character of the .shell and especially its strongly erenated internal margins, it is, 

 I think, pretty certain that this species is an Eripliyla. 



Venus perovalis, and also F. Syriaca and indurata of Conrad from Palcestiue, are said by Fraas 

 to be in a state hardly sufficient for determination (vide Wiirt. Nat. Jahreshefte, xxiii, 18G7, 



p. 238). 



Astarte ? discus, Sharpe, (Quart. Journ. Geol. Soc, Lond., vi, p. 177,) from Spain could 

 be an Eripliyla with a flat strong shell, but the hinge is not known. 



Fen. extdaris. Keys., a little tumid oval species. Eichwald (Leth. lloss., livr. xi, 1867, p. 712,) 

 supposes that this may rather be a neocomien than a Jurassic shell. 



Taking now a very general view of tlie characters of cretaceous species which 

 are up to the present known, and supposing that only some of my suggestions are 

 correct ( — at least those in which I have examined the hinges, or of which good 

 iigures exist), we may be allowed to summarise the investigations regarding the 

 representation of the Veseribm in cretaceous rocks in the following words — 



Of the TAPESiN^ we find only a few doubtful species belonging to Pullastra, 

 Semitapes, Tapes, and one species of Amygdala ; on the other hand, mauy belong 

 to the now genus Baroda and its sub-genus Icanotia ; they are all iu external 



