ACHATINA. 93 



Yar. crystallina. Greenish white and transparent 



2. C. LUBRICA (slippery). 



Shaped much like the last species, but not so ventricose 

 in proportion to its length ; transparent, solid, greenish, 

 sometimes with a reddish tinge ; whorls five to five and a 

 half ; spire rounded at the point ; mouth pear-shaped, and 

 broader than the last species ; lip often reddish. 



This is a very common shell. It occurs in all parts 

 of the British Isles in moss, under stones, logs, &c. It 

 is a good plan to mount a row of these brilliant little 

 objects on a strip of card. The varieties are numerous, 

 as follows: 



Var. I. hyalina. Greenish white. 



Var. II. lubricoides. Smaller and more slender. 



Yar. III. viridula. Shaped like Yar. II., but 

 greenish white. 



Yar. I Y. fusca. Smaller, thinner, reddish brown. 



Yar. Y. ovata. Much smaller, oval, spire shorter. 



Genus XL ACHATINA. 



A. ACICULA (a hair-pin). 



Slender and tapering in shape, semi-transparent, white, 

 thin, and very glossy ; whorls five and a half ; spire obtuse ; 

 apex rounded ; suture distinct ; mouth long and rounded at 

 the base, which has a deep notch. 



