TEBENNOPHORUS. 183 



c. Irregularly clouded with brownish, without any tendency to longitudinal 

 arrangement. 



d. With three distinct rows of large clouded spots. 



e. With great numbers of fine black spots. 



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



g. Blackish-gray, with black lines along each side, and an indistinct line 

 down the middle of the back. 



The appearance of the surface of the mantle is constantly changing, from the 

 play of light on its lubricated eye-peduncles, tentacles, and furrows, which are 

 in almost ceaseless motion. 



There can be no doubt that this is the animal originally described by Bosc 

 under the name of Limax Caroliniensis, though his description 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 appear in the figure. 



An individual of this species kept in confinement deposited about 30 eggs, 

 June 20, 1843 ; on the 10th of July the young made their way out of the shell. 

 The eggs were semi-transparent, oval, about \ of an inch in the greatest diam- 

 eter. The young when excluded were more than a fourth of a inch long, semi- 

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

 black at tip, the latter very minute and hardly visible. Body broad ; back 

 whitish, with two distinct rows of minute black dots down the middle, 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 were four 

 times as large as when hatched. 



Of the synonymes I have quoted, Limax togata is said by Gould (Otia, 182) 

 to be identical ; and Limax marmoratus, of DeKay, I have ascertained to be the 

 same from the correspondence of my father with Dr. Newcomb. 



For jaw and lingual dentition see p. 180. 



The genitalia are figured by Leidy, 1. c. The testicle lies upon the right 

 side, partly concealed by the liver; it is round and lobulated. The epididymis 

 is tortuous. The vas deferens is very long, tortuous, and muscular. It 

 joins the penis sac at its summit, and has the retractor muscle inserted into 

 it the length of the penis above the latter. The penis sac is irregularly cylin- 

 droid, bent at its summit. The ovary is exceedingly lobulated. The oviduct 

 is tortuous, wide, and very much sacculated. The prostate gland is longer 

 than in Limax or Arion. The generative bladder is large, globular, or nearly 

 so. Its duct is rathsr less than half the length of the oviduct. At its junction 

 with the neck of the latter an oval muscular organ exists, the dart sac. With- 

 in the latter, at the bottom, is a hemispherical papilla, upon the summit of which 

 is placed a white, calcareous, calcarate dart. At the junction of the vagina, 

 common to the neck of the oviduct, duct of the generative bladder, and tho 



