FOSSILS OP THE CAKB0NIFER0U3 LIMESTONES. 309 



Kcnnctcook, -wliicli indicates a fine shell of this genus ; but it is only 

 Ji cast of the interior, and gives no good specific characters. 



Fig. 118. — Euomphalus exortivus. 



h 



(a) Shell partly preserved. (6) Cross section. 



Turho. — To this genus I refer, in the meantime, tAVo 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 

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

 The 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 arc 

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

 outline, the other oval and slightly curved ; but both are too imperfect 

 for description. 



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

 Windsor, Gay's River, De Bert River, etc. — Allied to N. plicisfria, 

 Phillips, but different in markings, having merely delicate growth 

 lines on the whorls, and always of small size. 



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



HowL [cast). riafyschisma duhia. 



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, but 

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



Platyschisma duhia, n. sp, (Fig. 121), coll. II. Poole, Windsor. — I 

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

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



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

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

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

 It corresponds to L. pohjgyra, M'Coy, and L. acicula, Phillips, but 

 is more slender and delicate than either. 



