240 CEETACEOUS PELECYPODA 



favour of his classification of this problematic fossil. The upper valve, says Gabb, 

 has not yet been observed. 



In some respects Tamiosoma recalls the organisation of the peculiar Sippurite 

 from Jamaica, called by Woodward Barrettia. 



List of species of Hippuritidje. 

 Lists of most of the species of this family have been lately published by Pictet and 

 Campiche in the ''Mat. p. 1. Pal. Suisse'', 5«^e g^j..^ 4me partie, p. 40, &c. The generic and 

 most of the specific identifications have been accepted according to the elaborate papers of Mr. Bayle, 

 published in the Bull. Soc. Geol. de France. I shall here only quote the names of the species, 

 adding a few which are not included in that last comprehensive list. With reference to the generic 

 determinations of some of the species of Badiolites and 8ph<2rulites I have already expressed some 

 doubt, and I shall note them in detail further on, though for the present these notes can only be 

 accepted as suggestions, as I have no sufficient materials for comparison. But it seems to me that 

 the discrimination of the two last named genera has not been fully carried out, and that the 

 occasional presence of the so-called cartilage hinge-ribs in the attached valve of Badiolites has given 

 rise to pronouncing the species to belong to Sph^erulites^ when only one of those ribs was observable. 

 1-4. — Badiolites canaliculata, d'Orb., sp., cornu-pastoris, Desm., sp., angulosa, d'Orb., sp., 

 lumhricalis, d'Orb., (the last is probably a Splimmlites) . 



5. — Bad, acuticostata, d'Orb. This is a very peculiar costate form, havino* the free 

 valve also strongly ribbed and the apex sub-central; it possibly indicates a special section of 

 Badiolites. 



6-15. — Bad. excavata, d^Orb., ingens, Desm., sp., fissicostata, d'Orb., Boyanajd.'Oxh., 

 Mauldei, Co(i., crateriformis,J)Q^m,, sp., Jouaymeti, Desm., Bournoni,J)Q^m.., undulata, Gein., 

 SaxonicBj Bom., sp. 



16-18. — B. Trigeri, Bayle, Lapeyrousei, Gold., (apparently as distinct from radiosa) , and 

 Ciplyana, Byck., are quoted, besides some others by Bosquet from the Mastricht beds in Staring^'s 

 Bodem van Nederland, ii deel. 



19. — Biradiolites Bozowii, Fisch., is described by Eichwald in his Leth. Boss., 10°^^ livr. 

 1867, p. 357. It appears to be a Badiolites , though the existence of two furrows is mentioned 

 in both valves. It was originally described by Fischer as Cibicides Bozowii from upper creta- 

 ceous beds at the river Ratowka near Vereya in Govt. Moscou. 



Eichwald also mentions Bnargetes of Fischer, which may be a Badiolite, and another 

 problematic form which Fischer called Tripodetes. 

 20. — Bad. Nicaisi, Coq., is from Algiers. 



21-25. — Bad. Aimesii, Tuom., Austinensis, Bom., lamellosa 8f Ormondii, Tuom., and 

 B. Tuomeyana, Gabb, are quoted from North America in Meek's Clieck-list of cret. foss.. Smith. 

 Misc. Coll., No. 177, p. 5. 



Sph^rulites (vide Pict. and Camp., 1. cit., p. 50). 



26-45. — Sph. Blumenhachii.^tvidL., Marticensis.di'Orh.y sp., erratica, Pict. et Camp., para- 

 doxa, P. and Q., foliacea, Lamck., Fleuriausi, d^Orb., sp., triangularis, d^Orb., sp., polyconilites, 

 d'Orb., sp. (non polyconites), subdilatata, elliptica, and Germani, Gein., sp., falcata, Beuss., 

 Mortoni, Mant., (is to all appearance a Badiolites), Ponsiana, d^Arch., Beaumonti, Bayle, radiosa, 

 d^Orb., sp., Sauvagesi, d^Hombres Fir., sp., Nouleti, Bayle, squamosa, d^Orb., angeiodes, Picot 

 d. 1. Peir. 



^^-^%.-^8p^l. Martini, Bailettei ^x^^ sinuata oi ^^OyVi^xi J have in external appearance quite 

 the form of Badiolites. 



