211, CEETACEOUS PELECYPODA 



fiS.69. — C. feneatratum and granigerum apparently belong to Acantliocardiutn ; with tlie first 

 Alth.'s C. polonicum is identical (see Favre Descript. Moll, foss., Lemberg, 1869, p. 114). 



70-71. — C. Becksii and semipustulosum belong to Acanthocardium, 



Ti.—C. Beheyanum is a Schizodesma (Mactrid^, vide p. 55). 



73. — C, Marguarii is an Acanthocardium. 



74. — C. gibbomm does not appear to be different from C. Becksii ; there is no difference to be 

 observed in the ribbing, and the slightly higher form does not seem to indicate more than an 

 ordinary variation. 



75. — C. Noeggerathii is a Lmvicardium, and the same is apparently the case with the two next 

 species. 



76-77. — C Gosaviense and Reussi. 



7S. — Prot.ocardium Peiersi, Zittel. 



l^.—C. Bredai,'M\i\\<iv, (Petref. Aach. Kreidef. Supplem., 1859, p. 12, pi. 7, fig. 16); the 

 form is that of an Acantliocardium, but the surface, if natural as described, would indicate a 

 Lftvicardium, 



80-81. — C. Benedeni and pecUnifurme, Miiller, are mentioned by Bosquet in extract from 

 Staring's Bodem v. Nederlaud, pt. ii, (Foss. fauna and flora v. Liraburg) j I am not acquainted 

 with these species. 



Coquand (Mon. Etage Aptien de TEspagne, 1865, p. 117, &c., describes the following 

 seven new species : — 



82-81'. — C. Janus, comes, and miles are Protocardia. 



8.5.86.— (7. Euryalus and bidorsatum are either not well preserved forms of Acanthocardium, or 

 they belong to Lavicardium. 



87.— C. Amphitritis is an insufficient cast, which may belong to a Lavicardium, but has more 

 the form of a Cucullaa. 



88. — C. amamnn is to all appearance a Cerastoderma. 



89.— C. Iceve, Gueranger, (Album paleont. de la Sarthe, 1867, pi. xx, figs. 4 and 6,) appears 

 to be a Lmvicardium. 



From Eichwald (Leth. ross., Uvr. xi, 1867, p. 680, Sec.,) the following species have to be 

 referred to, but the formations to which they belong do not appear to be satisfactorily determined. 



90. — C. boreale is apparently a Cerastoderma, or the sub-genus Pectunculus. 



91.94,. — C. avus, armenicum, aratense, and semigranulatum are probably Acanthocardia ; of the 

 two last named the formation is uncertain. 



95-96. — C. peiilufn ani verveceum are described by Loriol in Mat. p. 1. Pal. Suisse, 4'"'= sen, 

 1S6S, pp. 26 and 28, from the Valaugien beds ; the first belongs to Protocardinni, the second has 

 more the form of a Cicatrea (a sub-genus of Cyprina), than of any of the true CARDIIK^. 



97-99. — C. crebri-echinatum, Syriacum, and Hermomnse are described by Conrad from PaliEstine ; 

 they are based upon insufficient casts, and Fraas believes that they only indicate two species 

 (vide "\V\irt. naturw. Jahreshefte, xxiii, 1867, p. 235, &c.). 



100-101. — C. helium and ovulum are noticed also by Conrad in Lynch's expedition to 

 PaJSBstine. 



102-114. — C. Pauli, Dnirugei, anressense, algirum, Platonis, regulare, sulciferum, triangulate, 

 Di'xKavxi, Vattoni, Mermeti, Saport<e,punicum,sixe described by Coquand from the Province Con- 

 stautine (Geo), and Paleont. Prov. Const., 1862, p. 204, &c.), but as the species are chiefly based 

 upon cast specimens they are not of much value in point of comparison with other fossils ; the 

 genera Acanthocardium, Lcevicardium, and Protocardium are represented among them. 

 115. — C. denticulatum from South Africa is a typical Acanthocardium, 



