186 AMERICAN JOURNAL 



are drawn from specimens of Geomelania from Jamaica, received 

 from Messrs. Gloyne and Vendryes. 



Amphibulima Patula, Brug. Plate 17, fig. 1 & 2. 



A mounted membrane from Dominica, received from Mr. R. J. 

 Lechmere Guppy, furnishes the following notes : Lingual mem- 

 brane long and broad, composed of numerous waving rows of 

 teeth, of the form usual in the Helicidce. Centrals sub quadrate, 

 extended at the basal angles, narrowing towards the centre, ex- 

 panding towards the upper edge, which is reflected and tricuspid, 

 extending quite to the base of the tooth ; the cusps are stout, the 

 median one bluntly pointed. The lateral teeth are of the same 

 type as the centrals, but unsymmetrical. The marginals are 

 long and narrow, rounded at bnse, narrowed at the apex, re- 

 flected and bicuspid; cusps short, stout, and generally a simple 

 modification of those of the laterals. The extreme marginals 

 have irregular teeth, like simple papillae. 



A group of central and lateral teeth is given in fig. 1, several 

 marginals in fig. 2. 



