LIMAX. 
79 
inside, which is sometines sprinkled with minute 
6rystal-like shining particles, a little convex and 
transversely wrinkled on the outside ; with the edges 
membranaceous ; on the top, or broader extremity, 
is a small central prominence, or apophysis of ad- 
hesion, by which it is attached to the animal ; the 
lower extremity very thin and rounded. 
When irritated, they dilate their shields. Their 
eggs are white, and deposited in spring under stones 
&c. 
These animals (especially the larger slug) are often 
infested with mites, which were discovered by 
Reaumur, in the Mem, Acad, des Sciences^ 1710, 
and called by Gmelin Acarus Limaciim, They 
have been well described, with some interesting de- 
tails of their habits, by Mr. Jenyns, under the name 
of Philodromus Limacum^ in the Mag, Nat, Hist, iv. 
538. f. 109. 
b. Back rounded ; tail keeled ; shield shorty not pro- 
duced behind^ with a single order of concentric strice ; 
respiratory hole subcentral or posterior, (Eulimax.) 
17. 2. Limax Jlavus, Yellow Slug. — Yellowish, 
tessellated with brown ; tentacles bluish ; the 
hinder part of the mantle rounded ; shell thin, 
concave, mammillated externally at its posterior 
extremity, (t. 3. f. 15.) 
Limax flavus. Linn. Fauna Suec. 363. ; Nilson, Moll. Suec. 
5.; Clark, Ann, and Mag. N. H. xii. 338. t. 11. f. 11, 12.; 
Forbes and Hanley, B. M. iv. 19. t. E. E. E. f. 1. — Limax 
variegatus. Drap. Hist. Moll. 127. ; Fer. Prod 21 , Hist. 
71. t. 6. f. 1 — 6.: Nunneley, 1. c. 47. t. 1. f. 3. ; Leach, Syn. 
Moll. 52. — Yellow slug. Penn, Brit. Zool. iv. 41., from 
