308 CYCLOSTOMATID^E. 



ascribed to Eschscholtz and used for the reception of some 

 marine shells which are allied to Patella. The present 

 genus was (according to Charpentier) named Pupula by 

 Agassiz. 



ACME LINEA'TA*, Draparnaud. 



Bulimus lineatus, Drap. Tabl. Moll. p. 67. A. lineata, F. & H. iv. p. 

 204, pi. cxxv. f. 7. 



BODY milk-white speckled with brown, nearly transparent : 

 mantle dark brown : snout very narrow, tumid, and curved, 

 marked transversely with flat, parallel and indistinct 

 wrinkles : tentacles nearly cylindrical, diverging, whitish, 

 very finely wrinkled across, each of them encircled at its 

 base by a ring of dark spots ; their extremities nearly 

 pointed : foot rounded in front, with a narrow tail. 



SHELL oblong-cylindrical, semitransparent and glossy, yel- 

 lowish-brown, marked in the line of growth with remote 

 curved grooves or deep striae, of which there are from twenty 

 to thirty on the body whorl, as well as with a few slight and ob- 

 scure spiral lines : periphery rounded : epidermis of moderate 

 thickness : whorls 6-7, compressed, the last occupying about 

 two-fifths of the shell : spire rounded at the point : suture 

 distinct, but not deep : mouth pear-shaped, effuse at the base, 

 and contracted above into a rather acute angle : outer lip 

 thin and flexuous : pillar lip reflected : inner lip spread on 

 the columella : umbilicus small and nearly concealed by the 

 reflexion of the pillar lip : operculum flat, sunk deep within the 

 mouth, marked with faint and irregular radiating striae; spire 

 formed of only two whorls and a half. L. 0'085. B. 0-035. 



Var. 1. alba. Shell white or colourless and transparent. 

 Var. 2. sinistrorsa. Spire reversed. 



HABITAT : Among decayed leaves in open drains, and 

 under stones which lie close to the ground, in woods 

 throughout a great part of these isles, from Lanark- 

 shire to the extremity of Cornwall, and also in Wales 

 and Ireland (East, West, North, and South), but not 

 everywhere or abundantly. Var. 1. Rejectamenta of 



* Marked with lines. 



