GASTEROPODA. 241 
Figure 294, ventral view of the shell, with the animal ; 294 a, profile 
view of the animal. 
TRITON CANCELLATUM (Lamarck), Encycl. Meth., pl. 415, f. 1. 
Anim. sans Vert., ix. 638. Kiener; Iconog., pl. 16, f. 1. Murex 
Magellanicus, CuEmNitz; Conch., tab. 164, f. 1570. 
ANIMAL with the head prolonged, proboscidiform ; mouth transverse, 
under the extremity of the head; tentacles long, robust, compressed, 
obtuse at the point; eyes small, on an enlargement of the tentacles at 
their lower fourth. Foot oblong, rounded posteriorly, with a sub- 
marginal fissure anteriorly, beneath pale flesh-colour. Body pale 
rose-coloured, clouded with purple, darker at the extremities, tips of 
tentacles white. Siphon short, violet-coloured, as is the border of the 
mantle, but the rest of the mantle is pale flesb-coloured, with short, 
close-set cirrhi fringing its edge. 
Another specimen is described as of a uniform, pale orange-colour ; 
tentacles clear yellow beneath and at base ; foot pale yellow, deepening 
into orange towards the margin. ‘Tentacles rather slender, with the 
ocular pedicles less developed. Male organ situated on the neck 
behind the right tentacle; pale flesh-colour, cylindrically compressed, 
with an elbow at the middle, and pierced by a hole on its lower side. 
[ia P. €:)] 
These two forms prove to be respectively the male and female of 
the same species. It is, therefore, very variable in the proportions of 
the shell, and in the colours of the animal; and it seems to differ 
both from the true Tritons of the tropics, and from the Buccinums of 
the northern temperate and frigid regions. This, with the species of 
Cape Horn regarded as of the genus Fusus, will ultimately be sepa- 
rated as a distinct genus. 
Figure 298, shell, with the animal as in motion, female form; 298 a, 
male form ; 2984, the male organ ; 298c, plantar disk of the foot. 
Triton OREGONENSE (Jay), Ann. Lyc. Nat. Hist., N. York, iv. 165, 
pl. 11, f. 2. Fusus Oregonensis, Reeve; Conch. Icon., ple ie, £61", 
616. Fusus cancellatus, REEVE; op. cit., pl. 16, f. 62. 
61 
