MOLLUSCA. 
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ATHORACOPHORUS BITENTACULATUS (Quoy) Gould. 
Limaz bitentaculatus, Quoy, Voy. de |’Astrol., Zool., II. 148, pl. 13, 
fig. 1-3; Lamarck, Anim. sans Verteb., 2 ed., VII. 723. 
The figure of Quoy is so imperfect that it is worth while to give a 
more exact one, taken from a living animal. It is of a pale yellow 
colour, covered with dot-like tubercles of a brownish hue. The lateral 
branches of the dorsal grooves are not strictly parallel and simple, but 
many of them are again branched. The little dilatation of the ten- 
tacles is stated by Mr. Drayton to be simply “a shoulder or enlarge- 
ment,” and not a sheath. There is also represented a minute tubercle 
in the place of the oral tentacles. The coiled attitude, I believe, is 
not assumed by any other one of the Limacide. 
Length about one inch; breadth one-fifth of an inch. 
It was found by Quoy and Gaimard at Tasman’s Bay; and by Dr. 
Pickering at the bottom of a crater at Taiamai, Bay of Islands, New 
Zealand. 
Figure 6, animal extended; 6a, view of the back; 64, mode of 
coiling itself; 6c, the head. 
ARION FOLIOLATUS (Gould). 
A. corpore depresso, fulvo, sulcis nigricantibus oblique reticulato, areolis 
inclusis foliosis ; clypeo prelongo, levi, fulvo, concentrice fusco-notato ; 
apertura communt ante-mediana ; tentaculis parvis, brevibus. 
Colour a reddish fawn, coarsely and obliquely reticulated with slate- 
coloured lines forming areol, which are indented at the sides, when 
viewed by a magnifier, so as to resemble leaflets; the corselet is con- 
centrically mottled with slate-colour, and the projecting border of the 
foot is also obliquely lineated. ‘The body is rather depressed, nearly 
uniform throughout, and somewhat truncated at the tip, exhibiting a 
conspicuous pit, which was probably occupied by a mucus-gland. 
