111 
Mr. Cuming observed it in the greatest abundance on the leaves 
of bushes at St. Jauno, in the province of Cagayan, at the extreme 
north part of the island of Lugon. 
Dr. Albers refers the species to his subgenus Corasia, consisting 
of Helices with large reflected peristomes ; the shells have some re- 
semblance to the young imperfect specimens of some species of that 
genus, as Helix Albaiensis, but they differ from them in the pillar 
lip being evenly arched and imperforate, and not straight from the 
axis and slightly perforated, as in their young shells it always is. 
MM. Quoy and Gaimard described a land mollusk which they 
discovered on leaves in Tasman’s Bay, New Zealand, under the name 
of Lima bitentaculatus, Voy. Astrolabe, t. 13. f.1, 2,3. They only 
found a single specimen, which, they say, they only partially exa- 
mined. From this description, as the animal differed from Limax in 
so many particulars that it was impossible to keep it im that genus, 
I formed a provisional genus for it under the name of Janella, in the 
4th volume of Mrs. Gray’s ‘ Figures of Mollusca,’ p.112. I have 
just received from New Zealand a specimen of land mollusk which 
agrees with the animal described by MM. Quoy and Gaimard in so 
many particulars, that I am inclined to believe it to be either the spe- 
cies they observed, or a second species of the same genus ; and as it 
offers some peculiarities not noticed in their description or figure, I 
shall proceed to characterize the genus. 
JANELLA. 
Body elongate, convex ; back rounded; tail not keeled, tapering, 
acute behind, without any subcaudal gland. Mantle covering the 
whole of the back, with a slightly raised lateral margin, leaving a 
rather broad space between its edge and the edge of the foot, thin, 
smooth, with a longitudinal groove along the centre of the back ex- 
tending 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; tentacles two, arising from the front just within the 
edge of the mantle, and quite retractile like those of the Slugs. 
Aperture of respiration a very small round foramen, with a raised 
edge, on the right side and close to the central groove on the back, 
just above the aperture of reproduction. Mouth inferior, just at the 
end of the foot, with three tubercles in front, which are formed by 
the continuation of the grooves on the front of the mantle. Aper- 
ture for reproductive organs on the front part of the edge of the 
right side of the mantle, about one-fourth the entire length from the 
head. 
The foot narrow, divided into three indistinctly-marked longitudi- 
nal bands, the middle band rather the widest, the lateral bands with 
rather distant cross grooves, most distinct on the outer edge, and 
