260 AMERICAN JOURNAL 



Stenopoma, n. gen. Type S. lineata, Lam. 

 S. cceruleseens, Rve., is a synonym of S. orientalis, Rve. 

 S. reticidatus, Rve., is a synonym of S. eximia, Rve. 

 Orthopoma, n. gen. (Described from an operculum.) 



Description of Saulea, a new genus of Ampullariadce from 

 Sierra Leone. By Dr. J. E. Gray. 



Type Ampullaria vitrea, Born. 



Annals and Magazine of Natural History. 4th Series. Vol. 1. No. 5. 



May, 1868. 



Description of a rare Indian Clausilia. By Sylvan us 

 Hanley. 



C. tuba. Hab. Shan, provinc. Ind. Or. 



Remarks on some Species of Oliva recently described by Mr. 

 Frederick P. Marrat. By T. Graham Ponton. 



The author questions the distinctness of all the Olives de- 

 scribed by Mr. Marrat in the Annals, 3d ser, xx. p. 213, twelve 

 in number, and refers ten of them to previously described species, 

 as being probably identical with them, or at most only varieties. 

 As Mr. Ponton does not determine the matter positively, except, 

 perhaps, in one or two instances, his paper must be regarded as 

 only suggestive ; he has merely propounded questions which the 

 future monographist of the genus will have to answer. Since Mr. 

 Ponton has taken the trouble to hunt up resemblances which 

 have perplexed himself, it seems to us only fair that he should 

 have avoided writing until he had resolved these questions satis- 

 factorily. We will propound to our readers one of Mr. Ponton's 

 conundrums, in his own words : " Oliva oblonga, Marrat. — Is 

 not this the shell figured by Reeve under the name of 0. fusi- 

 formisf" Now then, who will answer it? But we will ask two 

 other questions of Conchologists. 1st. Are Mr. Marrat's surmises 

 quotable in synonymy ? 2d. Are they in good taste ? 



No. 6. June, 1868. 



On the Terrestrial Mollusca of Dominica and Grenada ; 

 with an account of some New Species from Trinidad. 

 By R. J. Lechmere Guppy. 



Previously to Mr. Guppy's recent visit to Dominica for that 

 purpose, it had never been conchologically explored : of twenty 

 species collected there, eleven are identical with those of the 

 neighboring islands, and the following nine are described as 

 new : 



