TEBENNOPHORUS. 459 



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

 the edo-o of the mantle l)elow it. 



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

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

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

 Tllia Americana. 



The variations from tlie common coloring are numerous. We 

 have already observed the following varieties : — 



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



/;. Whitish, slightly clouded longitudhially. 



c. Irregularly clouded with brownish, without any tendency to 

 longitudinal arrangement. 



d. Witli three distinct rows of large clouded spots. 



e. With great numbers of fine black spots. 



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



g;. Blackish-gray, with black lines along each side, and an indis- 

 tinct line down the middle of the back. 



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

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

 and furrows, which arc in almost ceaseless motion. 



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

 by Bosc under the name of Liinax Caro/inensis, though his descrip- 

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

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

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

 varieties. He makes no mention of the mantle, and it does not ap- 

 pear in the figure. 



An individual of this species kept in confinement, deposited about 

 thirty eggs, June 20, 1813 ; on the 10th July the young made their 

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

 one fifth of an inch in the greatest diameter. The young when ex- 

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

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

 at tip, the latter very minute and hardly visil)le. Body broad ; back 

 wliitish, with two distinct rows of minute black dots down the mid- 

 dle, and other scattering spots on the sides. No perceptible furrow 

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

 and in a few days Avere four times as large as when hatched. 



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

 vex, but having no distinct vertical carina on the centre, its most 

 anterior point. Concave margin irregular, without a distinct, acute 



