21 



edge of the umbilicus. Surface -with deeply serrated, zig-zag fissure-like 

 strige or imbrications, which cross the whorls at nearly a right angle from 

 the dorsal keel into the umbilicus. Width of a specimen of three complete 

 whorls 6 lines ; transverse width of aperture about 3 lines. (In some it 

 appears to be proportionally wider, but as the specimens are imbedded in 

 stone this point cannot be accurately decided.) Height of the aperture 

 apparently somewhat less than the width. This species is most closely 

 allied to C. compressus, Conrad, but is smaller, and has the whorls in con- 

 tact. English Head and Charleton Point ; H. R. J. Richardson. 



C. DESIDERATUS, n. sp. — This species differs from C. pannosus mhsiVmg 

 the whorls less slender, a specimen of three whorls being nine lines in dia- 

 meter. They are also crossed by obscure transverse undulations as in C. 

 ornatus, Conrad. The specimens are all casts of the interior, and the sur- 

 face is therefore unknown. Macasty Bay ; H. R. T. C. Weston. 



PTEROPODA. 



Genus Conularia, Miller. 



C SPLENDIDA, n. sp. — Acutely pyramidal, four sided, tranverse section 

 square, angles narrowly rounded and with a longitudinal groove. The 

 sides are flat, or nearly so, with a median line. The tranverse grooves are 

 concave in the bottom, and meet on the median line at an angle of 160° or 

 170°. The ridges between the grooves are minutely rounded on their edges, 

 sometimes obscurely nodulose, and occasionally divided by a fine impressed 

 line. These characters are all seen on different parts of the some specimen. 

 There are six ridges, and the same number of grooves in the length of one 

 line. The longitudinal striaj diverge outwards from the median line towards 

 the angles in their course towards the aperture at an angle of 15 to 25. 

 They are obscurely developed but still distinctly visible when the surface 

 is well preserved. There are from fifteen to twenty of these stride in the 

 width of one line. Length of best preserved specimen 24 lines ; width of 

 the sides at the aperture 6 lines. This species is certainly closely allied 

 to C. Trentonensis, Hall, from which it only differs in having more numer- 

 ous longitudinal striae. Charleton Point ; H. R. J. Richardson. 



C. ASPERATA,n. sp. — Tliis species when perfect is most probably like O. 

 splendida, an elongated four-sided pyramid. The only specimen collected 

 is compressed so that the tranverse section is elliptical or rather rhomboidal. 

 There are four grooves corresponding to those on the angles, and four 

 median hues. The tranverse elevated striae and grooves cross the median 

 hues at an angle of about 170°. The grooves appear to be sub-angular in 

 the bottom, but owing to the condition of the specimen this is not certain. 



c 



