298 LAND AND FRESH-WATER SHELLS OF N. A. [PART L 



back, is a deep curved furrow, running upwards and backwards. Loco- 

 motive baud not distinguished from the lower surface of tlie foot. 

 Greatest length, when fully extended, 100 mill. ; ordinary length 75. 



Limax carolinensis, Bosc, Vers de Buffon de Deterville, 80, pi. iii, f. 1. 

 — Ferussac, Hist. 77, pi. vi, f. 3. — Deshayes, in Lam. 2d ed. VI, 719 ; 

 ed. 3, III, 264 (1SH9).— Mrs. Gray, Fig. Moll. An. 



Limax carol inianus, De Roissy, Buffox de So.nnim, V, p. 185 (An XIII). 



Limax togata, Godlp, Inverteb. Mass. 3 (1841). 



Philomycus carolinensis, Ferussac, Tab. Syst. 15.— Pfeiffer, Brit. Mus. 

 Cat. 158. — H. & A. Adams, Gen. II, 220.— Chenu, Man. de Conch. I, 

 469, f. 3479 (1859). 



Tebennopkorus carolinensis, Binney, Bost. Journ. Nat. Hist. IV, 171 

 (1842) ; Terr. Moll. II, 20, pi. Ixiii, f. 1, 2.— Adams, Shells of Ver- 

 mont, 163 (1842).— DeKay, N. Y. Moll. 24, pi. iii, f. 1 (1843).— 

 Wyman, Bost. Journ. Nat. Hist. IV, 410, pi. xxii (1844), auat.— 

 Leidy, T. M. U. S, I, 250, pi. iii (1851), anat.— W. G. Binney, Terr. 

 Moll. IV, 3.— Morse, .Journ. Portl. Soc. I, 7, f. 3 ; pi. iii, f. 4 (1864). 



Limax marmoratas, DeKay^, Cat. N. Y. An. 31, no descr. (1839). — Linsley, 

 Shells of Conn., Sill. Journ. [i] XLVIII, ^79, uo-descr. 



From Canada to Texas. 



In this species the head never projects beyond the mantle. 

 The tentacles and eye-peduncles are contractile^and retractile, as 

 in the other slugs. When handled it secretes from the skin a 

 thick, milky, adhesive mucus. Small individuals suspend them- 

 selves by a thread. We have noticed its posterior extremity 

 curved upwards when the animal was in motion ; at other times 

 flattened and expanded, and again very much corrugated, and 

 apparently truncjited ; sometimes there appear to be one or more 

 mucous glands at this part, and the secretion of mucus from it 

 is more plentiful than from other parts of the body. The mantle 

 is not cleft from the respiratory foramen to the margin, as in most 

 of the slugs, but is provided with a deep furrow or canal running 

 from the orifice to the edge of the mantle below it. 



It is very inactive and sluggish in its motions. It inhabits 

 forests, under the bark, and in the interior of the decayed trunks 

 of fallen trees, among which it is'particularly partial to the Bass- 

 wood, Tilia Americana. 



The variations from the common coloring are numerous. We 

 have already observed the following varieties : — 



a. Whitish, without clouded spots, tending to grayish. 



h. Whitish, slightly clouded longitudinally. 



