jahellidje. :2:2 ( .) 



the animal, for procuring for them, at considerable trouble, 

 living specimens, which were kept alive some time by being- 

 fed on slices of cucumber and carrot, and from one of which 

 the figure given was obtained. 



Fain. JANELLID.E. 



Body elongated, slug-like. Tentacles none ; eye-pe- 

 duncles short, retractile, dilated at the base, arising from the 

 front of the mantle. Mantle covering the entire back, with 

 a longitudinal groove extending along the middle the whole 

 length of the animal, and giving off branches from each 

 side ; respiratory orifice very small, circular, on the right 

 side close to the central groovo on the back. Foot not 

 keeled, tapering, acute behind, without any sub-caudal gland. 

 ^Reproductive orifice at the front part of the mautle-margin 

 on the right side. 



Shell none. 



The mouth in this family is inferior, at the anterior end of 

 the foot, with three tubercles in front formed by the con- 

 tinuation of the grooves of the mantle. The oculigerous 

 peduncles arise from the front, just within the edge of the 

 mantle; the mantle has a slightly-raised, lateral margin, 

 leaving a rather broad space between the edge and the edge 

 of the foot ; it is thin and smooth, and the central groove 

 sends out branches which diverge backwards ; a short, 

 straight, diverging branch is given out over the head, on 

 each side, to the hinder base of the tentacles ; it is then 

 forked, and the two branches are continued on the under 

 edge of the mantle to the corner of the mouth. 



VOL. II. n II 



