210 Annals of the Carnegie Museum. 



Gyronema ? rotalineum Raymond. 



(Plate LIV, figure 4.) 

 Gyronema? rotalineum Raymond, 1906, Annals Carnegie Museum, 

 Vol. Ill, p. 577- 



Description. 



Shell of medium size for the genus. Whorls five in number, spire 

 acute, volutions rounded. The shell expands gradually from the apex, 

 the body whorl occupying about half, or a little less than half, the 

 total length. All the whorls are robust, nearly circular in section. 

 The suture in the cast is deep. The first three whorls are smooth, 

 but the last two show two or three revolving ridges on the lower side 

 of the whorl, the upper side being smooth. In the middle of the 

 body whorl is a narrow concave band. The aperture was apparently 

 rounded, the columellar lip somewhat excavated. There is no um- 

 bilicus. The height of one specimen is 18 mm.; the width of the last 

 whorl, 14 mm. 



Locality. — This shell occurs very rarely in the Middle Chazy at 

 Sloop Bay, Valcour Island, New York. The type is in the collection 

 of the Yale University Museum. 



Gyronema microclathratum (Hudson). 



Holopea microclathrata Hudson, 1905, Report New York State Paleon- 

 tologist for 1903, p. 294, PI. 4, figs. 3, 4. 



This species, which appears to possess more of the generic charac- 

 ters of Gyronema than of Holopea, has been very fully described by 

 Hudson in the locality mentioned above. The shell is found in the 

 Chazy, at Valcour Island, New York. 



Order CTENOBRANCHIATA Schweigger. 



Suborder PLATYPODA. 



Family Subulitid^ Lindstrom. 



Genus Subulites Conrad. 



Subulites prolongatus Raymond. 



(Plate LIV, figure 13.) 

 Subulites prolongatus Raymond, 1905, American Journal of Science, 

 Series 4, Vol. XX, p. 378. 



