BULIMUS. 233 



A. Shell cylindrically conic : sj>ire 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. Gr. G. G. f. 6. 



Body rather thick, slightly narrowed and nearly truncate 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 : ten- 

 tacles greyish, of a darker hue on the upper part, nearly smooth ; 

 upper pair veiy sHghtly conic, with their bulbs dilated but 

 rather globular; lower pair very short: foot nearly truncate 

 in front, the sides transversely and very closely gTooved, tail 

 blunt and keeled. 



Shell turreted, opaque, white with a faint tinge of yellow, 

 transversely streaked with light-brown, sometimes ha^T.ng one 

 or two dark-reddish-brown or almost black bands encircling 

 the lower whorl, one of which (where there are two) is con- 

 tinued on the upper whorls ; the shell is occasionally white or 

 colourless ; sculptiu-e consisting of rather close but irregular 

 strioe 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 striae and give the latter an appear- 

 ance of being disposed in curved rows ; the surface is also 

 sometimes wrinkled or faintly pitted: lyer'iphery 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: oider 

 lip reflected on the pHlar 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. 



Yar. 1. hizona. Shell smaller and having two dark bands on 

 the body whorl. 



Yar. 2. iyijlata. Shell rather more ventricose, streaked with 

 brown or marked with a single dark band : spire shorter : 

 whorls proportionally broader. 



* Pointed. 



