b PULMONATA. 



1. JANELLA. 



The only genus of the family. 



Janella, Gray, in Mrs. Gray's Figures of Mollusca, i\.\\2; Ann. 

 Sf Mag. N. H. Dec. 1853. 

 Philippi, Handb. Conch. 237. 

 Limax, sp., Quoy Sf Gaimard, Voy. Astrolabe. 



1. Janella antipodarum. B.M. 



Body (in spirits) ovate lanceolate, back convex, dai-k brown. 

 Janella antipodarum, Gray, Ann. ^- Mag. N. H. Dec. 1853. 

 Hab. New Zealand. A single specimen. 



Body elongate, convex ; back rounded ; tail not keeled, taper- 

 ing, acute behind, without any subcaudal gland. Mantle cover- 

 ing the whole of the back, with a slightly raised lateral margin, 

 leaving a rather broad space between it and the edge of the foot, 

 thin, small, with a longitudinal groove along the centre of the 

 back extending the whole length of the animal, and giving out 

 branches from each side which diverge backward to the edge ; in 

 front, over the head, there is given out a short, straight, diverging 

 branch on each side to the hinder base of the tentacles, then 

 forked, and the two branches continued on the under edge of the 

 mantle to the corner of the mouth ; the tentacles two, arising 

 from the front just within the edge of the mantle, and quite re- 

 tractile hke those of the Slugs. Aperture of respiration is a very 

 small foramen, with a raised edge on the right side and close 

 to the central groove on the back, just above the aperture of re- 

 production. Mouth inferior, at the end of the foot, with three 

 tubercles in fi'ont, which are formed by the continuation of the 

 grooves on the front of the mantle. Aperture for reproductive 

 organs on the fi-ont part of the edge of the right side of the 

 mantle, about one-foiu"th the entire length from the head. 



The foot narrow, divided into three indistinctly-mai-ked lon- 

 gitudinal bands, the middle band rather the widest, the lateral 

 bands \\ith rather distant cross grooves, most distinct on the 

 outer edge and with shorter marginal grooves between them, 

 giving the edge of the foot a crenated appearance ; the end of the 

 body is suddenly more slender, with a prominence on the back 

 just before this sudden alternation, as if tlie mass of the viscera 

 were confined to the first two-thirds of the body ; but this may 

 be caused by the contraction of the animal from being in spirits. 



Shell none, or at least there is no appearance of any through 

 the skin. 



Length tlu-ee-fourths of an inch. 



