226 



Pleurotomaria sponsa. (N. sp.) 



Description.— Shell small, turbinate, with four ventricose whorls ; apical 

 angle from 75° to 85° ; the general form like that of a Holopea. The 

 whorls are nearly uniformly convex, most tumid a little below the middle, 

 where there is a narrov,^ convex distinctly elevated band, above which the 

 whorl is depressed convex to the suture. In the upper whorls the baud 

 is either close to the suture on the lower edge of the whorl, or else 

 concealed. Under side rather strongly convex, with an angular carina at 

 the edge of the umbihcus ; the latter small, about one-sixth the whole 

 width of the base. Surface apparently smooth, but probably finely 

 striated. 



Length from 4 to 8 lines ; width a little less than the length. 



None of the specimens have the aperture perfect, but they show, that 

 of the inner side, the upper half is formed by the penultimate whorl, and 

 the lower half by a slightly reflexed lip. 



Locality/ and Formation.— 1^ ^ Table Head, Newfoundland ; Quebec 

 group. 



Collector.— 3. Richardson. 



Pleurotomaria Etna. (N. sp.) 



Fig. 210. Fig. 211, 



Fig. 210. — Pleurotomaria Etiia. a, b, views of a small aud a large 

 specimen. 

 211.— P. Hortensia. 



Description. — Shell pyramidal ; apical angle varj'ing from (d5'^ to OC. 

 "Whorls from four to seven ; on the upper side nearly flat, a fain groove 

 just above the lower edge ; on the under side flat and nearly horizontal, 

 rounded at the umbilical ed^^e. Umbilicus about one-third the whole 



