SIND TERTIARY GROUPS. 



207 



Classes and Oedees. 



Genera. 



Ckeithium 



Pletjeotoma 

 tuebinella 



Fasciolaeia 



Fusus 



Ranella 



MUEEX 



Species. 



pseudocorrugatum, 

 d'Orb. . 



subsemicostatum, 

 d'A.&H. 



Jielli, d'Arch. . 



subnudum, d'A. & H. 



Jcayei, d'A. & H. 

 subbacillum, d'A. & H. 

 subfiliferum, d'A. & H. 

 subtrockleare,dL'A.& H. 

 delbosi, d'A. & H. 

 voyseyi, d'A. & H. 

 affinis, C. Sow. 



hexagona, d'A. & H. 

 nodidosus, C. Sow. 

 subregularis, d'A.& H. 

 mixtus, d'A. & H. 



bucklandi, d'Arch. . 

 granosus, C. Sow. 



morrisi, d'A. & H. . 

 viperina, d'A. & H. . 

 lyelli, d'A. & H. 

 tchihatcheffi, d'A. & H. 



Gbot/ps. 



X 



H 



Remabks. 



This and the four next 

 species are said to be 

 very rare, and do not ap- 

 pear to be in the Survey 

 collections. 



Our shell does not quite 

 agree with Sowerby's 

 figure, but is probably 

 the same species. 



The Ranikot fossil is a cast 

 only. 



The small figure given by 

 Sowerby much resembles 

 our "buccinoid shell" 

 from the Eanikot beds, 

 but his description does 

 not tally and is insuffi- 

 cient. 



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