385 
Mr. T. D. A. Cockerell’s Notes on Slugs . 
Described from two alcoholic specimens in the British 
Museum, collected in Formosa and presented by Matthew 
Dickson. 
I was at first inclined to regard this as a geographical race 
of confusa {^bilineata, auctt., non Bens.) (which has been 
recorded from Formosa*), and as I have not examined the 
jaw, I cannot yet be certain whether it belongs with that species 
or true bilineata. However, bilineata is found in the Chusan 
Islands ; so it becomes highly probable that the Formosa form 
has a ribbed jaw and is allied thereto. 
L. formosensis differs externally from confusa in its colour 
and markings, but resembles it in its tuberculose sole. L. 
formosensis compared with the Chusan bilineata does not 
seem specifically different so far as external characters go. 
Limacella campestris (Godw.- Aust.) . 
Limacella bilineata , subsp. 
Philomycus (. lncillaria ) campestris , Godw.- Aust. Journ. As. Soc. Beng. 
xlv. pt. 2, p. 315, pi. viii. fig. 3 (1876). 
Ochraceous yellow, with an obscure dorsal and lateral pale 
brown bands, narrow and more or less interrupted. Sole 
finely laterally transversely wrinkled. Length 23 millim., 
respiratory orifice 4 millim. from anterior border of mantle ; 
sole 4 millim. broad. 
Shape of slug cylindrical, tapering posteriorly. Jaw pale, 
ribbed. 
Differs from confusa in its non- tuberculose sole and 
different markings and its ribbed jaw. 
Described from five specimens in the British Museum from 
Dukhun (CW. Sykes). 
Although Godwin- Austen gives but a short description 
and rather indifferent figure of his type of campestris from 
Kholabari, and says nothing about the jaw, I think there can 
be no reason for considering our Dukhun form distinct 
from campestris , since, so far as we know, there is not any 
important difference between them. Should the type of cam - 
pestris be found later on not to have a ribbed jaw, it will be 
time to propose a new subspecific name for the slugs described 
above. The discovery of a group of Limacella with ribbed jaw 
in Asia is very interesting and tends to endorse the opinion 
that this is not a generic character. 
* See Heynernann, ‘Die nackten Landpulmonaten des Erdbodens/ 
1885, p. 66. 
Ann. & Mag. N. Hist. Ser. 6. Vol . vi. 
28 
