ROEBUCK : THE BRITISH SLUG LIST. 43 



Limax agrestis var. albida Picard. Animal entirely white, 

 without markings. 



I found a beautiful white specimen of this species 

 in April, 1883, at Bolton Abbey in Wharfedale, which 

 was under a stone in company with the type. 



Moquin-Tandon hardly appears to recognize the 

 correct character of a var. albida when he assigns to 

 it such a character as " Animal greyish-white without 

 markings. Sometimes two scarcely perceptible lateral 

 grey bands on the shield." I have not access to 

 Picard's description, but should it agree with that of 

 Moquin, my specimen will certainly require a new 

 name. 



DESCRIPTION OF A NEW SPECIES OF CASSIS. 

 By JAMES COSMO MELVILL, M.A., F.L.S. 



Cassis kalosmodix Melvill, n. sp. PI. i., fig. i. 



Shell oblong-ovate, rather thick, smooth, whitish 

 tinged with blue on 'the upper whorls, and in the 

 obscure bands across the body whorl, painted through- 

 out with numerous longitudinal light brown or fulvous 

 stripes, which are thicker and somewhat darker in 

 crossing the transverse bands, the alternate ones 

 passing into dark brown flames at the top of the 

 whorls next the suture; spire elevated, slightly convex; 

 upper whorls convexly rounded, penultimate sloping 

 above, then swollen; last whorl convexly cylindrical; 

 apex pink; aperture narrow above, moderately ex- 

 panded below, in length rather more than two-thirds 

 of the entire shell; interior smooth, tinged with brown; 

 outer lip smooth, thickened white, marked externally 



