GASTEROPODA. 223 
APLYSIA PULMONICA (Gould ). 
A. corpore oblongo, posticé sacciformi, fusco-viridi venis fuscts reticulato : 
apertura siphonals parva: caput obtusum, viz bilobatum: tentaculis 
anticis curtis, auriformibus ; tentaculis cervicalibus conicis, acutis, 
obscuré annulatis. 
Body oblong, posteriorly sacciform, with a short, distinct prolonga- 
tion of the foot backwards. Colour bronze-green, coarsely reticulate 
with dark veins; siphonal aperture small; head obtuse, slightly bilo- 
bate; anterior tentacles short, ear-shaped ; cervical tentacles acutely 
conical, faintly annulate. 
Length six inches; height two inches. 
Obtained at Tutuilla, Samoa Islands. Couwthouy. 
This animal bears a general resemblance to A. Tongana of Quoy 
and Gaimard; but their figure shows the ruffled posterior disk pecu- 
liar to the subgenus Dolabella, no traces of which are apparent in this 
species. 
Figure 268, the animal. 
BURSATELLA LACINULATA (Couthouy, MS.) 
B. elevata, oblonga, postice acuminata, virescens confertim nigro-punc- 
tata, arbusculis viridibus sparsis ornata: pes ampla, lata; soled stra- 
minea nigro-punctata ; labrum utrinque in filos tentaculiformis pro- 
tractum. 
Colour pale-green, closely covered with black ‘dots, which give it a 
bronze hue. Whole body ornamented with little green arborescent or 
frondesceut tufts, irregularly disposed, except around the upper margin 
of the foot, where they are smaller and form a regular row; viewed in 
the water these tufted appendages cause the animal to appear as if 
covered with a delicate moss. The mouth is nearly concealed by its 
thick, fleshy lips, which are prolonged on each side into a slender 
