48 
Bulletin 35 
196 
/</(,'•<’ j6g 
upper niiocene fauna of Trinidad would have been much 
more limited than it is. 
Caroni beds, Savonetta. 
Chcmnitzm d’Orb. Moll, de Cuba, pi. xvi. f. 10-24. 
Other forms of this species are distinguished specifically by 
cl’Orbigny as C. pulcheHa, C. oniata, and C. modesta. 
The.se and other varieties are common in the Matura 
Beds. 
Ar’is /u'lccieroide!:, n. sp. 
Shell turreted, cylindric, many-whorled, shining, whorls 
slowlv increasing, impre.ssed with a deep groove below the 
suture, which is equally deep, forming a spiral thread ; 
aperture sub-circular, columella slightly refiexed, peristome 
.simple. 
Pliocene, Matura. It re.sembles a Proto, but the colum- 
ella prevents its reference to that genus. I wall not be sure, 
however, that it ought not to be placed in the neighborhood 
of Turritella. Its smooth texture seems to be against that 
view of its affinities. I refer it to the genus Adis provi- 
visionally only. 
Leiostraca davata n. sp. 
vShell rather club-.shaped, whorls smooth, flattened, the 
la.st forming more than Yi ; spire acuminate, suture linear, 
.scarcely impressed ; aperture suboval, elongate, narrow 
above, dilated in front ; peristome .simple, columella some 
what reflected and thickened. 
Pliocene, Matura. Allied to L. acuta. 
Turritella planigyrata n. sp. 
Conic-cjdindric, striate bj" fine spiral lines, whorls very 
slightly convex, the later ones nearly flat ; aperture sub- 
quadrate. 
