280 Mr. T. D. A. Cockercll's Notes on Slugs. 



anterior border ; sole 17 millim. broad. Colour dark oliva- 

 ceous. Back well keeled for about 18 raillim., keel inclined 

 to be flexuose. General form of cnlifornicus. Sole trans- 

 versely wrinklecl-sulcate, especially lateral areas. Rugfe like 

 ealifornicus^ about 17 rows on eacli side of body, counting 

 from dorsum to sole. Mantle rather finely granulose. 

 Caudal pit distinct. Jaw dark, ribbed. 



The alcohol in which they have been is coloured yellow. 



Hah. Costa Rica {Mr.Janson). Four specimens in British 

 Museum. 



Anadenus Jerdoni^ G.-Aust. 



Godwin-Austen's type of tliis extraordinary slug, from 

 Cashmere (coll. Jerdon), is in the British Museum ; I made 

 the following notes supplementary to the original descrip- 

 tion : — Jaw dark, not greatly curved, with about twelve 

 strong ribs. Body with transverse deep sulci, stronger than 

 the longitudinal ones. Mantle broadly ovate. Colour entirely 

 greyish ochreous. Respiratory orifice 28 millim. from ante- 

 rior border of mantle. Mantle 38 millim. long. Slug about 

 90 millim. long. External genital orifice beneath anterior 

 right border of mantle, 9 millim. from base of right eye- 

 peduncle and 5 millim. from edge of sole. Sole with median 

 and lateral areas not strongly differentiated. This species 

 departs considerably from the ordinary type of Anadenus. 



Anadenus aliivagus, Theob. 



Two specimens from Simla {Theobald) in British Museum, 

 from which I made the following notes : — 



Length 47 millim. Mantle oval, 22 millim. long, uni- 

 colorous, granulose; respiratory orifice 14 millim. from ante- 

 rior border. Sole very broad, lat. 18 millim. ; median area, 

 lat. 6^ millim., thus nearly the same width as either lateral 

 area. Sole finely transversely wrinkled. Reticulations on 

 body numerous and small, more longitudinal than transverse 

 — *. e. oblique lines run from dorsum downwards and back- 

 wards, and these are connected by numerous longitudinal 

 lines and reticulations between them. The oblique lines are 

 about eight or ten on each side. Colour dull ochre, spotless ; 

 neck grey above. 



Another specimen in British Museum, from Sikkim (coll. 

 Schlagintweit), is evidently also altivagus, but is 74 millim. 



