n8 



Buixktxn 35 



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Page 282 



organisms like that called Calcaroma by W. Thomson (see The 

 Atlantic, vol. 1 page 233). Of larger animals the chief remains 

 are those of fishes. Otolites are the most abundant of these and 

 very curious the}^ are. Teeth are not uncommon, but not so 

 abundant as otolites *. 



Little attention seems to have been paid to the Ostracoda 

 either recent or fossil of the West Indies. They are doubtless of 

 high interest and I have made a beginning in the identification 

 of the forms found in the Naparima rocks. I might have included 

 them in the table, but as none are recorded from any West Indian 

 deposit I content myself with giving a simple list. But the 

 determinations are only approximate and possibly some even maybe 

 generically wrong as my slender acquaintance with these minute 

 Crustacea does not admit of greater exactness and there is no 

 literature to refer to on the subject of West Indian Ostracoda. 

 Pontocypris faba Reuss N. Cytherella polita Brady N.P. 



trigonella Sars N dromedaria Brad} 7 N. 



simplex Brady N. Bairdia amygdaloides Br. N.P. 



Cythere dictyon Brady N. Krithe bartonensis Jones N.P. 



circumdentata Brady N. producta Brady P. 



vinimea Brady N. 



rastromarginata Brady P. 

 (N. Naparima beds. P. Pointapier Ditrupa bed.) 

 On account of the minuteness of the Radiolaria and Diatoms 

 and the quantity of extraneous matter associated with them they 

 are difficult to isolate and mount and I have not done much in 

 this way. So far as the Radiolaria are concerned I believe our 

 deposits contain the identical forms found in Barbados. One 

 afternoon I sat down and made out from a slide of South Napa- 

 rima marl of my own mounting the following forms named by 

 Khrenberg from Barbados specimens : — 



Eucyrtidium ampulla Carpocanium coronatum 



excellens Rhabdolithis ingens 



montgolfieri Lithopera lagena 



acephalum Halicalyptra setosa 



gematum Flustrella concentrica 



Podocyrtis argulus Perichlamydium spirale 



puellasinensis accrescens 



dominasinensis Stylosphaera 



mitrella Anthocyrtis 

 Haliomatina humboldti Tithocyclia 



entactinia Cornutella 



oculatum Stylodictya 



On Otoliths of Fish see Stoddart, Intell. Observer vol. iii (1863) p. 



s 



