416 CRETACEOUS PELECYPODA 



164.. — Jt. procanit, Giimbel, (Geognost. Besclircibg. Ostbay. Grenzgeb., 18C8j p. 767), allied 

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



165. a. guc^tphallca, Schlocnbach, (Neues Jabrb. f. Mineral, for 1869, extract of ' Beitrag 



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

 distinctly ribbed and appear to have been gaping as in Mantellum, The species is from the Green- 

 sand of Rothenfulde, near Osnabriick (Germany). 



106. — R. [.^ Phiffiosloma'] Allhi, Favre, Descript. moll. foss. de Lemberg en Galicie, 1869, 

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



167-168. — R. [Zimatula] subcarinata et Archiacana, Briart et Cornet, Foss. de la meule 

 de Bracquegnies, pp. 50 and 51, Mem. Com-. Acad. Belgique, vol. xxxiv, 1869-70. 



169. — R. S^? Plarjmloma\ acutirostris, Eichw., (Leth. ross., xme livr., p. 471,) is noted 

 simply from silicious cretaceous beds in the Govt. Orenburg. 



Doubtfully cretaceous. 



no.— Ctenoslreoti distans, Eichw., is placed by its ai;thor in the Neoeomien, though it 

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

 p. 456). 



171-175. — R. \_Fla(iiostomci\ Fischeri, Eichwald, (ibidem p. 461), R. decemcostata, Trautsch., 

 (ibid. p. 466), R. planicosta, Trautsch., (ibid. p. 467), R. li'Plaijiostoina] irregularis, Eichw., 

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

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



d. From Africa. 



176-178. — R. [Phgiosfomci^ Grenieri, R. Flattersi, and Belettrei of Coquand are the only 

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



e. From America. 



179-186. — R. aculilineafa, Conr., crenulicosfa, Roomer, deniiculata, Gabb, /eoj;e«*?«. Con., 

 pelagica, Mort., reticulata, Lyell and Forb., S(^Maro«a, Gabb, and Wacoeims, Rcemer, are cited from 

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



187-188. — R. \_!' Plagiosfoma] microtis, Gabb, L. [ F Limaiula'] appressa, Gahh, Pal. Cali- 

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



189-190. — R. Shastaensis et mdtiradiata, Gabb, ibid. vol. ii, p. 201. 



/. From Asia. 



191-204.-7?. \_Plagiostoma] nudata, Ootatoorensis, et (? P.) inter punciuata, R. insignis, inter, 

 plicosa and scabricula, R. \_Limatula] persimilis, R. [Ctenoides'] tecta, Goldf., R. \_!' Ctenoides'] 

 scaberrivia, R. [Acesta] obliquistriata et scrobicidata, R. \_Ctenostreon'\ complanata, will be described 

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

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

 for instance, R. scabricula to R. granulata, Goldf., R. interplicosa to R. carinata, Miinst., R. per- 

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

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



Limea. 



205-206. — L. exigna et biplex are quoted by Eichwald from Neoeomien beds, but these may 

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



207. — L. Cenomanensis, Guerauger, Album pal. d. 1. Sarthe, 1867, pi. xxiv, fig. 9. 



203. — L. OldJiamiana is the only species which occurs in the South Indian cretaceous deposits. 



