TEBENXOPHORUS. 459 



provided with a deep furrow or canal running from tlic orifice to 

 tlic edge of the mantle l)clow it. 



It is very inactive and sluggish in all its motions. It inhal)its for- 

 ests, under the barlv, and in the interior of the decayed trunks of 

 fallen trees, among which it is particularly partial to the basswood, 

 Tllia Americana. 



Tlie variations from the common coloring are numerous. We 

 have already observed the following varieties : — 



a. Whitish, without clouded sj)ots, tending to grayish. 



b. Wliitish, slightly clouded longitndinally. 



c. Irregularly clouded with brownish, without any tendency to 

 longitudinal arrangement. 



d. With three distinct rows of large clouded spots. 



e. With great numl)ers of fme blacic spots. 



/. Gray, with a line of minute black dots along each side. 



,<,'-. Blackish-gray, with black lines along each side, and an indis- 

 tinct line down the middle of the l)ack. 



The appearance of the surface of the mantle is constantly chang- 

 ing, from the play of light on its lubricated eye-peduncles, tentacles, 

 and furrows, wliich are in almost ceaseless motion. 



There can be no doubt tliat tliis is the animal originally described 

 by Busc under the name of Liinax Caro/ifiensis, though his descrip- 

 tion is so imperfect that it can only be recognized by the arrangement 

 of colors which belongs to it. Ilis original drawing, engraved in 

 Fcrussac's work, is a tolerably accurate representation of one of its 

 varieties. He malces no mention of the mantle, and it docs not ap- 

 pear in the figure. 



An individual of this species kept in confinement, deposited about 

 thirty eggs, June 20, 1843 ; on the 10th July the young made their 

 way out of the shell. The eggs were semi-transparent, oval, about 

 one fiftli of an inch in the greatest diameter. Tlie young when ex- 

 cluded were more than a fourth of an inch long, semi-transparent and 

 gelatinous ; eye-peduncles and tentacles bluish-black at Imse, black 

 at ti}), the latter very minute and hardly visible. Body broad ; back 

 whitish, witli two distinct rows of minute black dots down the mid- 

 dle, and other scattering spots on the sides. No percc])tiblc furrow 

 between the mantle and body. They increased very rapidly in size, 

 and in a few days were four times as large as wlicn hatched. 



Jaw short, broad, arched, light horn colored, anterior surface con- 

 vex, l)ut having no distinct vertical carina on the centre, its most 

 anterior point. Concave margin irregular, Avithout a distinct, acuto 



