464 PROCEEDINGS OF THE GEOLOGICAL SOCIETY. [Apr. 1 8, 



REPTILIA. 



The fragments of Reptilian bones comprised in Capt. Garden's 

 collection, eight in number, were submitted to Professor Owen, who 

 kindly determined such as were sufficiently perfect. He considers 

 them to be all Cheloniany and described them as follows : — 



I and 2. Portions of a rib, with carinated costal plate, of a flat- 

 formed Chelonian. 



3. Apparently the coracoid of a Chelonian : and two others ; por- 

 tions of Chelonian bones. 



Locality. — Cliffs of S. African coast, near the Umtafuna and Um- 

 zambani Rivers. 



Inferences drawn from a Study of the Species. 



The total number of species of Mollusca in this Collection are 

 35, viz. : — 



Cephalopoda 5 1 



Gasteropoda 11 > 35 species. 



Lamellibranchiata .... 1 9 J 



Of these, 30 are hitherto undescribed forms, and related or having 

 a close affinity with Cretaceous species ; the only apparent exceptions 

 being that of the Voluta^ a genus characteristic of the Tertiaries of 

 our own country (but as Professor Forbes states in his Report on the 

 Indian fossils, to which this collection bears a considerable resem- 

 blance, *' having representatives, and those not peculiar forms, as low 

 down as the Upper Greensand in Europe, and occurring also in Cre- 

 taceous strata in North America") ; and the Teredoy which is un- 

 distinguishable from the London Clay species. 



There is but one species, however, which can be positively identified 

 with English fossils, and that is Pecfen quinquecostatus, one of the 

 most characteristic of cretaceous species. 



Of the Gasteropoda, the Scalaria is closely related to a cretaceous 

 species found in the Gault of Folkestone and Greensand of Black- 

 down ; one of the species of Turritella is also allied to a cretaceous 

 form from France ; another, but very imperfect specimen, appears 

 to be identical with Turrit ella Renauxiana, described by D'Orbigny 

 from the C7-aie Chloritee. 



The genera of Bivalves in this collection are all known in cretaceous 

 or older strata ; the peculiar forms of Area, Trigonia, Corbula, 

 Poromya, Lucina, Astarte, Nucula^ Inoceramus, and Pecten being 

 also characteristically cretaceous. 



There is but one species of Echinoderm ; and this is a charac- 

 teristic cretaceous form of the genus Hemiaster. 



There appears, therefore, from the evidence adduced, no difficulty 

 in believing that the beds from which these fossils were obtained, are 

 *' cretaceous,'* and probably palseontologically equivalent to the 

 Upper Greensand of this country and Craie Chloritee of France. 



