156 MOLLUSCA FROM THE CRAG. 



2. Capulus obliquus. S. Wood. Tab. XVII, fig. 1, a — b. 



Capulus obliquus. S. Wood. Catalogue, 1842. 



C. Testa elongato-ovatd, obliqud, distortd, subdepressd, laevigata, politd ; vertice involute, 

 later ali; margine postico superposito. 



Shell with an elongato-ovate and oblique opening, externally smooth and glossy, 

 one side truncate, with a depressed and involute apex overhanging the posterior 

 margin. 



Longest diameter of base, \\ inch. 



Locality. Red Crag, Walton Naze and Newbourn. 



Not a very rare shell, though large and rather tender. It appears to differ from 

 the preceding species in its greater obliquity and smooth exterior. My specimens 

 are without a vestige of stria? ; but Crag shells are often so much altered in that 

 respect as not to be depended upon for such characters ; the right side, however, in 

 this species is always smaller and truncated, while the left is expanded, and more 

 or less rounded. In all my varieties of C. ungaricus I have not observed this 

 regularity of form ; and I have no specimens by which they can be connected ; it is 

 nevertheless a doubtful species. The great persistency in its obliquity, which may 

 be seen in numerous specimens, appears its greatest claim to specific distinction. 

 It has probably lost a portion of its outer coating. 



3. Capulus militaeis. Mont. Tab. XVII, fig. 3, a— -j. 



Capulus militaris. var. (i, partim sinuosis, fig. 3 a, b. 

 Patella militaeis. Mont. Test. Brit. p. 488, t. 13, fig. 11, 1803. 

 Capulus militaeis. Flem. Brit. An. p. 364, 1828. 

 — becuevatus. S. Wood. Catalogue 1842. 

 Pileopsis militaeis. Thorpe. Marine Conch, p. 135, 1844. 



— Phil. En. Moll. Sic. vol. ii, p. 92, 1844. 



C. Testa obliqiie-conicd, striata, decussatd ; vertice hamoso, revoluto, ad dextram 

 incurvato ; margine postico impendente ; aperturd elongalo-ovatd, irregulari. 



Shell obliquely conical, striated, and decussated (?), with the vertex much 

 reflected and incurved ; volution inclining to the right ; apex overhanging the base 

 of the shell, with an elongate and ovate opening, but very irregular. 



Altitude, 1 inch ; length of base, -§•. 



Locality. Cor. Crag, Sutton. 



Red Crag, Newbourn, Sutton, and Walton. Recent, British Seas. 



This is a very variable species. I have included in it only those specimens 

 which appear to have a small oblique volution, with the vertex always inclining to 

 the right when the shell is upon its base in its natural position, with the anterior 



