Mollusks. 5103 



T. From a correspondent of the l Penny Magazine.' 



The description given in the above work is so general that it is 

 impossible to ascertain therefrom whether the animal described is of 

 a species known or unknown to science. As, however, the notice, 

 such as it is, may be acceptable, it is here given at length. 



"The shell slug of which the above is a representation was recently 

 (April, 1835) found in a garden in Gloucestershire. When at its full 

 length, it measured from an inch and a half to two inches. The upper 

 part of its body is of a pale colour, very thickly marked with exceed- 

 ingly minute black spots, which unite in an irregular manner; and 

 on the back are three dark stripes, which are more distinctly visible 

 in some individuals than in others ; and it is altogether much darker 

 when collapsed, the light colour almost entirely disappearing. The 

 under part of the body is of a bright salmon-colour, more vivid in 

 some specimens than in others. The greatest peculiarity in this slug 

 is a small shell, resembling some of the smaller limpet shells, which 

 covers the hinder end of the body : what purpose so small a shell 

 answers, as the slug as not the power of retiring into it, we have not 

 as yet a sufficient acquaintance with its economy to be able to deter- 

 mine. The shell, when separated from the slug, is semi-transparent. 

 While in its natural position, its colour appears nearly the same as 

 that of the back of the slug." 



Habitat. — "These slugs are found in gardens in Gloucestershire, 

 about eight or ten inches below the surface of the ground ; and they 

 feed on earth-worms. A worm an inch in length, which was placed, 

 in a box covered with glass, with three of these slugs, soon fell a prey 

 to one of them ; but a worm three inches in length writhed so 

 violently when seized that it succeeded in getting away. Afterwards 

 it probably became impeded in its movements by the slime of the 

 slugs, for in a few hours they had devoured it, as well as two others 

 of nearly eqmal length. It was observed that two of the slugs made 

 their repast at the same time at the two extremities of one of the 

 worms. These slugs appear to have been only lately discovered, and 

 very little is at present known of their habits." — Penny Mag. iv. 

 152. 



T. Scutulum, G. B. Sowerby. 



Found best from August to November. 



Animal. — Bears a near resemblance to T. haliotoideus, not having 



