GASTEROPODA. 239 
All of them have a quadrangular outline of the foot, when contracted, 
and all have long, stout tentacles, with the eyes near their tips, above 
which the tentacles terminate in a fine point. 
TRITON VARIEGATUM (Lamarck), Anim. sans Vert.,ix.623. K1ENER; 
Iconog., pl. 2. Murex tritonis, Lin. 
Anima gamboge-yellow, mottled with blotches of orange; tentacles 
with two black and two yellow rings near the extremity, the terminal 
and middle rings being yellow; eyes at the lower third of the tenta- 
cles; siphon cream-coloured, tinted orange, without blotches; male 
organ exposed, simple, sword-pointed. 
Obtained at Tutuilla, Samoa Islands. It was first met with at 
Aratika, one of the Western Paumotus. 
The fact that the animals of this species, as well as of the two allied 
species, T'. nodiferum and T. australe, are less brilliantly coloured than 
the animals of all other species of the genus, and are destitute of ocelli, 
lunules, or dots, has been noticed by other observers. These circum- 
stances, together with the great disparity in the size of the shells and 
the number of their varices in the two groups, would indicate an abso- 
lute separation; but we are not yet possessed of essential details suffi- 
cient to institute a new genus. The operculum in the first group has 
the nucleus subcentral, while in the second group it is nearly terminal, 
as in Murex. 
Figure 292, the animal as in motion. 
TRiron TUBEROSUM (LAMARCK), Anim. sans Vert., ix. 635. Quoy 
and Gaimarp ; Voy. de l’Astrol., pl. 40, f. 18. 
The colour of the animal, as given by Mr. Drayton, is quite different 
from that represented in the Zoology of the Astrolabe, where the ground 
colour is olive, and the siphon the same as that of the body. 
Found at Lebuka, Feejee Islands. 
Figure 295, the animal, with the shell in outline. 
