BUL1MUB, 233 



A. Shell cylindrically conic : spire long and pointed : 

 outer lip thin and plain. 



1. BULIMUS ACU'TUS*, Miiller. 



Helix acuta, Mull. Verm. Hist. pt. ii. p. 100. B. acutus, F. & H. iv. 

 p. 86, pi. cxxviii. f. 5, and (animal) pi. G. G. G. f. 6. 



BODY rather thick, slightly narrowed and nearly trun- 

 cate in front, slender and pointed behind, semitransparent, 

 yellowish-grey of different shades of intensity, covered with 

 very close and flattened tubercles : mantle touching the 

 outer lip of the shell, tumid, marked with milk-white and 

 brown specks : tentacles greyish, of a darker hue on the 

 upper part, nearly smooth ; upper pair very slightly conic, 

 with their bulbs dilated but rather globular; lower pair 

 very short : foot nearly truncate in front, the sides trans- 

 versely and very closely grooved, tail blunt and keeled. 



SHELL turreted, opaque, white with a faint tinge of 

 yellow, transversely streaked with light-brown, sometimes 

 having one or two dark-reddish-brown or almost black 

 bands encircling the lower whorl, one of which (where there 

 are two) is continued on the upper whorls; the shell is 

 occasionally white or colourless; sculpture consisting of 

 rather close but irregular strise in the line of growth, which 

 are stronger in some parts than in others, and there are 

 occasionally a few indistinct spiral lines which intersect 

 the strise and give the latter an appearance of being dis- 

 posed in curved rows; the surface is also sometimes 

 wrinkled or faintly pitted : periphery rounded : epidermis 

 rather thin : whorls 8-9, convex, gradually increasing in 

 size, the upper one smooth, polished and horncolour : spire 

 tapering, but blunt at its extremity : suture deep : mouth 

 oval, not much encroached upon by the penultimate whorl : 

 outer lip reflected on the pillar and slightly inflected at its 

 upper angle : umbilicus almost covered by the reflexion of 

 the lip in that part, but rather deep. L. 0*6. B. 0'2. 



Var. 1. bizona. Shell smaller and having two dark 

 bands on the body whorl. 



Var. 2. inflata. Shell rather more ventricose, streaked 

 with brown or marked with a single dark band : spire 

 shorter : whorls proportionally broader. 

 * Pointed. 



