16-8 PROCEEDINGS OF THE SCIENTIFIC ASSOCIATION. 
APPENDIX. 

Notes on the foregoing Table , with Descriptions of the 
New Species. 
It is highly probable that some of the names given in 
the above list will prove, upon a close examination of the 
fossils, to be synonyms— and doubtless others will be found 
to be still existing, such as Cardium haitense of Sowerby, 
which I dredged up in the Gulf of Paria. But there are 
still a great number of undescribed and extinct species, 
chiefly in the collection of the Geological Society, and many 
others will yet be discovered. 
Cylichna ovum-lacerti n. sp. 
Shell small, cylindrical-subovate, minutely striate trans- | 
Tersely ; spire small, sunken ; aperture as long as the shell, \ 
dilated anteriorly; outer lip straight, blunt; columella callus 
with a strong tortuous fold. 
Lower Miocene, Manzanilla. 
Scalar ia Leroy i n. sp. 
Shell turreted, cylindric, many-whorled, longitudinal ribs ( 
few, indistinct, base spirally striate, aperture oval. 
The example figured is a small one, but like nearly all 
the molluska of the Caroni series in Trinidad, the shell | 
appears to have grown to a very large size, for another * 
specimen in my cabinet is upwards of six inches long. I | 
have dedicated this species to my friend Mr. Louis Alex- j 
ander Le Boy, to whom I am under great obligations for 
his kindness in procuring me specimens of the Savanetta I 
fossils, and without whose assistance my knowledge of the 
