1840.] 



On the Geologtj of Cutcli. 



367 



nament ed with several rows of granules, which sometimes (especially to- 

 wards the apex) are united by elevated lines, and a row of tuberch s 

 upon the inferior edges of the upper whorls, succeeded by '2 rows upon 

 the middle volutions, and crenated ri(1ges of slight elevation on the 

 rounded border of the lowest whorls ; base flat, concentrically furrowed, 

 containing a thick plait within 



Like T. macufatus ; height 2 inches, diameter of the base nearly the 

 same. 



Loc. Soomrow^ 



Twritella angulata. Turrited, conical ; whorls convex, decorated by 

 about 7 caiins, of which the lowest but one is much the most prominent. 

 Height inch, diameter 8 lines. 



Loc. Soomrow. 



Turritella assimilis. Turrited, whorls convex, ornamented with (> or 



7 carinae, of which 2 or 3 are obscure, the 2d and 5ih being prominent. 

 Height 1| inch, diameter 5 lines. 



A smaller, narrower species than the last. 

 Loc. Soomrow. 



Terehra reticulata. Subulate ; sides of the whorls Rat, cancellated ; a 

 narrow upper portion of each whorl divided from the lower in the form 

 of a band by a ridge and furrov/ ; beak short, curved. 



In some specimens the transverse or spiral lines are less conspicuous, 

 particularly on the band and the upper half of the whorl. 



Loc. Soomrow. 



Ceritldum rude. Subulate, with curved sides, ribbed and furrowed ; 

 ribs numerous, cut across by about 5 s;]uare furrows, of which the up- 

 permost is distant from the suture; whorls 10 or 12, nearly flat, with an 

 obtuse varix between each —the last varix very prominent ; aperture 

 nearly round, with a canal at the upper angle ; inner lip thick, with a 

 callus at the top ; beak broken. Height 2 inches 8 lines, diameter about 



8 lines. 



Loc. Soomrow. 



Cerithium corrugatum. Subulate, ribbed and coarsely striated : ribs 

 numerous, arched, and prominent, crossed by deep striae ; whorls 8 or 

 more, rather convex, with a distinct varix upon each. 



This has much of the contour of an elongated Fusus. The lip and 

 beak are wanting in the only specimen found. 



Loc. Soomrow. 



Fusus? granosus. Short-fusiform, ribbed; ribs about 12 upon each 

 whorl, divided into grains by 6 or 7 transverse ridges, convex ; spire 

 half the length of the shell ; beak suddenly contracted. Heiglit 4 lines. 



