98 Description of some New Species of Fossil Shells. 



FAMILY CANALIFERA. 



Genus Pleurotoma. — Lamarck. 

 P. cancellata. PI. 1, fig. 13. 



P. testa sub-fusiformi, sub-crassa, cancellata, imperforata, striis 

 longitudinalibus obliquis ; spira acuta ; sinumagno, prope sutiirum; 

 anfractibus septenis, convexis; siituris impressis ; columella lasvi, 

 polita ; labro serrato, intus striate ; apertura longa ; canale brevi. 



Shell sub-fusiform, somewhat thick, cancellate, longitudinal 

 striae oblique, imperforate ; spire acute ; sinus large, near to the 

 suture ; whorls seven, convex ; sutures impressed ; columella 

 smooth, polished ; outer lip serrate, within striate ; mouth long ; 

 canal short. 



Length -3. Breadth -15 of an inch. 



Hemarks.— This pretty little shell is one of the most fusiform 

 Pleurotomae that I have seen. The mouth is half as long as the 

 shell. The transverse striae are much more elevated than the 

 longitudinal ones, which on the last whorl become almost obso- 

 lete. The channel is shorter than in most Pleurotomas, but is 

 still very evident. The first and second whorls are smooth, the 

 third has only longitudinal striae, and the rest are cancellate. 



Genus Turbinella. — Lamarck. 

 T. fusoides. PI, 1, fig. 14. 



T. testa fusiformi, crassa, imperforata, transverse ac longitudi- 

 naliter striata, longitudinaliter costata, costis maximis ; spira acuta ; 

 anfractibus septenis, convexis ; suturis parvis, irregularibus ; colu- 

 mella polita, quadriplicata ; labro intus striato ; apertura sub-ellip- 

 tica, canaliculata. 



Shell fusiform, thick, imperforate, transversely and longitudi- 

 nally striate, longitudinally costate, with very large costae ; 

 whorls seven, convex ; spire acute ; sutures small, irregular ; col- 

 umella polished, with four folds ; outer lip striate within ; mouth 

 sub-elliptic, channelled. 



Length -55. Breadth -35 of an inch. 



Remarks. — In this shell there are eight striae on the inside of 

 the outer lip, but as I have but one specimen, I cannot determine 

 whether this is a constant character. They appear to be made in 

 rows opposite every rib. The mouth is a little over half as long 

 as the shell, being -30 in length. The general form of this shell 

 is more that of a Fusus, than of a Turbinella, 



