378 P. E. Raymond — Fauna of the Chazy Limestone. 



JEunema leptonotum sp. no v. 



Shell small, with about 4 whorls, which increase gradually 

 toward the base. The whorls are all convex, the suture is 

 deeply impressed. The first 3 whorls are smooth and Holopea- 

 like. The fourth, or body, whorl is ornamented by 5 sharp 

 revolving ridges, equally spaced. These ridges are crossed by 

 fine vertical lines, which are close together and give the ridges 

 a pitted appearance. The aperture is not seen. 



The height of the shell is 5 min ; the width of the body whorl 

 3-5 mm . 



This shell is not uncommon in the Chazy, but on account of 

 its small size and liability to exfoliation it is often overlooked 

 or is in too imperfect a condition to be positively identified. 



Locality. — Lower Chazy, at Chazy, New York. The type 

 is In the Yale collection. 



Trochonema dispar sp. no v. 



Shell rather large, consisting of 3 whorls with depressed 

 spire and very large body whorl. The suture is very deep. 

 The whorls are almost free. The body whorl has a flat 

 revolving band on the outer side. The top is flat and sloping 

 and the lower side strongly convex. The surface markings are 

 not shown. The umbilicus is large in the cast, but rather 

 small in testiferous specimens. 



Locality. — Fairly common on Yalcour Island, in a locality 

 at the south end. It is rare elsewhere on the island and at 

 Chazy, New York. The type is in the writer's collection. 



Siibulites prolongata sp. nov. 



Shell small, elongate, fusiform, with about 6 (?) whorls 

 (specimen shows body whorl and 3 above). The whorls are 

 long and narrow, decreasing slowly and regularly toward the 

 top. The body whorl is about equal to the length of the 2 

 whorls above it and is contracted below. The aperture is not 

 shown. 



The length of the fragment is 29 mm ; the greatest thickness 

 is 5 mm . Probably the total length was about 35 mm . 



Locality. — Sloop Bay, Yalcour Island. The type is in the 

 Yale collection. 



Holopea hudsoni sp. nov. 



Shell usually large, with about 4 whorls. The body whorl 

 is large, robust, expanding rapidly. The spire is fairly long, 

 whorls strongly convex, sutures Yerj dee]). Aperture nearly 

 circular, entire ; the outer lip thin, the inner lip free from 

 the body whorl. The umbilicus is small. 



