182 TERRESTRIAL AIR-BREATHING MOLLUSKS. 



front of it; above the respiratory orifice, on the back, is a deep curved furrow, 

 running upwards and backwards. Locomotive band not distinguished from the 

 lower surface of the foot. Greatest length, when fully extended, 100 mill. ; 

 ordinary length, 75 mill. 



Limax Caroliniensis, Bosc, Vers de BUFFON de DETERVJLLE, 80, PI. III. Fig. 1. 

 -FERUSSAC, Hist., 77, PI. VI. Fig. 3. DESHAYES, in LAM., 2d ed., VII. 719 

 (1836): ed. 3, III. 264 (1839). MRS. GRAY, Fig. Moll. An. 



Limax Carolinianus, DE ROISSY, BUFFON de SONNIKI, V. p. 185 (An XIII). 



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



Phylomicus Carolincnsis, FERUSSAC, Tab. Syst. 15. PFEIFFER, Brit. Mus. Cat., 

 158. H. & A. ADAMS, Gen., II. 220. CHENU, Man. de Conch., I. 469, Fig. 

 3479 (1859). KEFERSTEIN (anat.), Zeit. fur Wiss. Zool., Bd. XVI. I. 183, 

 PI. IX. (1866). BERGH in Zool. Bot. Gesellsch. in Wein. XX. p. 833, an- 

 atomy (1870). HEYNEMANN, Mai. Blatt. 1863, p. 212, t. III. Fig. 12, 

 anat. (?) 



Tebennophorus Carolincnsis, BINNEY, Bost. Journ. Nat. Hist., IV. 171 (1842) ; 

 Terr. Moll., II. 20, PI. LXIII. Figs. 1, 2. ADAMS, Shells of Vermont, 163 

 (1842). DEKAY, N. Y. Moll., 24, PI. III. Fig. 1 (1843). WYMAN, Bost. 

 Journ. Nat. Hist, IV. 410, PI. XXII. (1844), anat. LEIDY, T. M. U^ S. , I. 

 250, PI. III. (1851), anat. W. G. BINNEY, Terr. Moll., IV. 3 ; L. & Fr.-W. 

 Sh., I. 297 (1869). MORSE, Journ. Portl. Soc., I. 7, Fig. 3; PI. III. Fig. 4 

 (1864). GOULD and BINNEY, Inv. of Mass., ed. 2, 457, Figs. 715, 716 (1870). 

 -TRYON, Am. Journ. Conch., III. 310 (1868). 



Limax marmoratus, DEKAY, Cat. N. Y. An., 31, no descr. (1839). LINSLEY, 

 Shells of Conn., Sill. Journ. [i], XLVIII. 279, no descr. 



From Canada to Texas and Florida; a species of the Eastern Province. 



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 themselves 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 trun- 

 cated ; 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 Basswood (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. 



b. Whitish, slightly clouded longitudinally. 



