FOSSILS OF THE CARBONIFEBOUB UMBBTONES. 309 



Eennetcook, which indicates a fine shell of this genus; hut it is only 

 -t of the interior, and gives no good specific characters. 



Fig. 118. — Euomphalus exortivus. 



o 



(a) Shell partly preserved. (b) Cross section. 



Turbo. — To this genus I refer, in the meantime, two pretty little 

 species contained in my own collections from Pugwash, and those of 

 Mr Hartt from Windsor. One is a little shell with four whorls, and 

 ■bout twenty folds in the suture. It occurs at Pugwash and Windsor. 

 Tlic other is similar in size and form, with seven or eight revolving 

 lines. It is found at Windsor. 



Dentalium. — In my collection from Economy and Pugwash are 

 easts which may represent two species of this genus, — one circular in 

 outline, the other oval and slightly curved ; hut hoth arc too imperfect 

 for description. 



Naticopsis Howi, Hartt (Fig. 119), col. J. W. D. and C. F. Hartt, 

 Windsor, Gay's River, Do Bert River, etc. — Allied to N. plicistria, 

 Phillips, hut different in markings, having merely delicate growth 

 lines on the whorls, and always of small size. 



Pig. 119. — Naticopsis Fig. 120. — Naticopsis dispassa Fig. 121. — 



Howi. (cast). riatijschisma dubia. 



c 



Naticopsis dispassa, n. sp. (Fig. 120), coll. J. W. D., Pugwash, 

 Windsor. — A small species of the type of N. ampliata, Phil., and 

 marked in the same way with delicate transverse lines of growth, hut 

 flatter in general form, and less depressed in the spine. 



J'/ah/schisma dubia, n. sp. (Fig.* 121), coll. II. Poole, Windsor. — I 

 refer to this genus with douht the shell represented in the figure. It 

 seems to he very rare, as I have only met with one example. 



conema acutula, n. sp. (Fig. 122), coll. Hartt, Windsor. — An 



vmely slender species, scarcely two lines long, and with fifteen 



or nmre whorls, marked with traces of four or five revolving lines. 



It corresponds to L. polygyra, M'Coy, and L. acicula, Phillips, hut 



is more slender and delicate than either. 



