1 86 CYCLOSTOMATID^:. 



CYCLOSTOMA E'LEGANS,* MULLER. PL. IX. 



Body very thick, obtuse, strongly bilobed ir front, rounded 

 behind, of a very dark greyish-brown above, lighter beneath, 

 strongly wrinkled in front, and covered with fine tubercles 

 behind ; mantle smooth, with milk-white specks on the upper 

 part ; snout long, produced beyond the body, strongly bilobed, 

 wrinkled ; tentacles nearly black, with coarse transverse wrinkles, 

 almost opaque, considerably diverging, bulbs nearly semi- 

 circular, paler, and more transparent than the tentacles ; eyes 

 placed on slight prominences at the posterior base of the 

 tentacles ; foot nearly black, its sole divided into two equal parts 

 by a longitudinal groove; tail rounded and nearly hidden by 

 the operculum when the animal is crawling. 



Shell conical, somewhat solid, slightly glossy, nearly opaque 

 above, body whorl more pellucid, greyish or yellowish-brown, 

 sometimes with a brick-red tinge, usually more or less streaked 

 or blotched with irregular markings of purplish-brown, occa- 

 sionally of a uniform grey or yellowish colour, with numerous 

 strong, close-set spiral ridges, the intervening spaces or furrows 

 intersected by finer and still more numerous ribs, the surface 

 being consequently reticulated ; periphery rounded ; epidermis 

 very thin ; whorls 4.5, rapidly enlarging, very tumid ; spire pro- 

 duced, apex obtuse and (as is also the whorl beneath it) smooth, 

 glossy, and of a purplish colour ; suture very deep ; mouth 

 circular, but slightly angulated above; outer and inner lips 

 continuous, thickish, scarcely reflected ; umbilicus narrow, not 

 deep ; operculum testaceous, with strong, close-set, curved striae, 

 flat except at the nucleus which is depressed, smooth, rather 

 darker in colour, and glossy. 



Inhabits many places in England as far north as 

 Yorkshire, among loose stones, under moss, and at 

 the roots of ferns and other plants on shelving banks 

 and in hedgerows, especially near the sea-coast and 

 on calcareous soils. It also occurs in Wales, Ireland, 



* Elegant. 



