9 6 



Bulletin 35 



244 



Page 175 



16 in height. Two dead valves, dredged by W. O. Crosby 

 in the Gulf of Paria. 



§ 3. The Miocene Pteropoda of Jamaica. 



In my paper on the Tertiary Molluska of Jamaica, pub- 

 lished in the Geological Society's Journal, August, 1866, 

 p. 281, 1 quoted a passage from a letter of Mr. Lucas Barrett 

 to Dr. Woodward, in which it was stated that a marl-bed 

 exists in that island, containing abundance of Pteropoda of 

 the genera Cleodora, Creseis and Cuvieria. Up to the 

 present time I have heard no more of that discovery, and 

 we have not, I believe, any account of the specific forms 

 found in Jamaica, except the description given by me of 

 Hyalea vendryesiana. In Haiti, Gabb has discovered six 

 species of Pteropoda, which he has named as follows : — 



Diacria bisulcata. Planorbella imitans. 



Balantium undulatum. Atlanta rotundata. 



Styliola sulcifera. " cordiformis. 



I have received additional specimens of the tertiary fossils 

 of Jamaica from Mr. Vendryes, and among them I find two 

 apparently new species of Hyalea, which I take the present 

 opportunit3 7 of describing. 



1. Hyalaa vendryesiana, Guppy. 



Geol. Mag. 1874, p. 405, pi. xvii., f. 2b (not 2a). 



This species belongs to the section Diacria, whilst the 

 following two may be placed among the typical forms of the 

 genus. There seems to be an error in my original descrip- 

 tion, for it does not appear that in H. vendryesiana the lips 

 are everted or thickened. That character belongs to H. 

 digitata, an imperfect example of which is figured with 

 //. vendryesiana (fig. 2a). In //. vendryesiana the lips are 



