280 
Mr. T. D. A. Cockerell’s Notes on Slugs . 
anterior border ; sole 1 7 millim. broad. Colour dark oliva- 
ceous. Back well keeled for about 18 millim., keel inclined 
to be flexuose. General form of californicus. Sole trans- 
versely wrinkled- sulcate, especially lateral areas. Rugae like 
californicus , about 17 rows on each 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. 
Hab . Costa Rica {Mr. Janson). Four specimens in British 
Museum. 
Anadenus Jerdoni , G.-Aust. 
Godwin-Austen’s type of this 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 altivagus , 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 
— i. 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. 
