416 CRETACEOUS PELECYPODA 



\Q,4,,^Jl, jyrocam, Giimbel, (Greognost. Besclireibg. Ostbay. Grenzgeb., 1868, p. 767), allied 

 to Pi. Cenomanensis, d'Orb. ; from Betzenstein (Bavaria). 



165. — B, guest^ohalica, Schloenbacb, [Neues Jabrb. f. Mineral, for 1869, extract of 'Beitrag 

 zur Altersb. d. Griinsandes', &c. &c., p. 27), has tbe form of a Plagiostoma^ but the valves are rather 

 disthictly ribbed and appear to have been gaping as in Mantelhm. The species is from the Green- 

 sand of Rothenfelde, near Osnabriick (Germany). 



166. — B, \_? Blagiostoma] AIM, Favre, Descript. moll. foss. de Lemberg en Galicie, 1869, 

 p. 138, pi. xii, fig. 20. 



167-168. — B. [Limatula] suhcarinata et Arcliiacana, Briart et Cornet, Foss. de la meule 

 de Bracquegnies, pp. 50 and 51, Mem. Cour. Acad. Belgiqne, vol. xxxiv, 1869-70. 



169. — B. \_? Blagio8iomd\ acutirostris, Eichw., (Leth. ross., x^e livr., p. 471,) is noted 

 simply from silicious cretaceous beds in the Govt. Orenburg. 



Doubtfully cretaceous. 



170. — Ctenostreon distanSy Eichw., is placed by its author in the Neocomien, though it 

 appears more probable that the Khorosehowo beds belong to the Jura, (Leth. ross., xme livr., 

 p. 456). 



171-175. — B. [Plagiostoma] Fischerij Eichwald, (ibidem p. 464), B. decemcostata, Trautsch., 

 (ibid. p. 466), B. planicosta, Trautsch., (ibid. p. 467), B. \_? Plagiostoma] irregidaris, Eichw., 

 (ibid. p. 475), and B, [Plagiostoma'] incrassata, Eichw., (ibid. p. 476), are also placed by Eichwald 

 in the Neocomien, but whether correctly or not remains yet to be proved. 



d. From Africa. 



176-178. — B. [Plagiostoma] Greiiieri, B. Flattersi, and Delettrei of Coquand are the only 

 species known from Algiers, (Geol. and Paleont. Prov. Constant., p. 214). 



e. From America. 



179-186. — B, acuiilineata, Cour,, crenulicosf a, Bcemer, dentimilata, Gc dihh, leonensis, Co^n., 

 pelagica, Mort., reticulata, Lyell and '¥oY\>.,sqiiafosa, G abb, and Wacoensis,'KQ^mQx,2.xQ^ cited from 

 North America in Check-list inv. foss.. Smith. Misc. Coll., 1864, No. 177, p. 7. 



187-188. — B, [? Plagiostoma] microtis, Gabb, Z. [? Limatula]^ appressa,Q;2,\)\>, Pal. Cali- 

 fornia, vol. i, pp. 202 and 203. 



189-190. — B, Sliastaensis et multiradiata, Gabb, ibid. vol. ii, p. 201. 



f. From Asia. 



191-204. — B, [Plagiostoma] nudata, Ootatoorensis, et (? P.) inter punctiiata, B. insignis, hiter- 

 plicosa and scahriciila, B. [Litnatula] persimilis, B. [Ctenoides] tecta, Goldf., B. [f Ctenoides] 

 scaherrima, B. [Acesta] ohliquistriata et scrohiculata, B. [Ctenostreon] complanata, will be described 

 from the South Indian cretaceous deposits : of these only B. tecta is to all appearance undistinguish- 

 able from European specimens, but several others exhibit marked relations to European species ; thus, 

 for instance, B. scahricula to B. grannlata, Goldf., B. interplicosa to B. carinata, Miinst., B. per- 

 similis to B. semisnlcata, Nilss. Besides these I shall have to notice three forms which are no 

 doubt distinct from any others, bat the present materials are not sufficient for specific identification. 



Limea, 



205-206. — L. exigua et hiplex are quoted by Eichwald from Neocomien beds, but these may 

 also be Jurassic (Leth. Boss., xme livr,, p. 477). 



207.— Z. Cenomanensis, Gueranger, Album pal. d. 1. Sarthe, 1867, pi. xxiv, fig. 9. 



208. — i/. Oldhamiana is the only species which occurs in the South Indian cretaceous deposits. 



