ZOOLOGY. 
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first brought on board the Hecla, at which time it had been dead for some days : 
the number of eyes are, however, most probably four, as is the case in its con- 
geners. The palpi are longer than the proboscis, tubular, rather compressed 
and tapering, without claw or nail, of ten articulations, whereof the two first 
are nodular, the 3d half the length of the proboscis, 4th very short, 5th 
bending downwards, half the length of the 3d, and the remainder, short, bending 
upwards, the 7th being rather the longest. The spurious feet are also tubular, 
ten articulate exclusive of a tubercle, the three first short nodular, 4th and 
6th longer than the body, 5th short, the others still shorter, bristled beneath, 
and terminated by a sharp nail. Legs eight, similar, cylindrical, nearly 
equal in length which is six inches; haunches three-jointed, equal, short, 
nodular; thighs rather shorter than the proboscis ; tibiae of two joints, equal, 
each two-thirds the length of the thigh. Tarsi also of two joints, the first 
being the longest, terminated by a strong and simple nail ; posterior extre- 
mity of the body straight, tubular, with an opening at the end. 
Idotea Entomon. 
Entomon Pyramidale, Klein. Dub. 38. Fig. 1 & 2. — Oniscus Entomon, Pall, Spied Zool. fasc. ix. 
p. 64. Tab. 5. f. 1—6. 
A fine specimen above three inches in length was found at ebb tide on the 
beach of Melville Island, being the same animal which is represented by 
Klein, under the name of Entomon Pyramidale, and referred to by Linnaeus in 
the 10th edition of the S^st. Nat., as his Oniscus Entomon ; as such it was again 
figured and described by Pallas, with whose minute description the present 
individual corresponded in all respects; the O. Entomon of British writers, espe- 
cially of Pennant, Brit. '' Zool. v. iv. p. 38. pi. 19. f. 5. is a distinct species, 
never attaining the size of the present, and differing in the conformation of the 
anterior legs, and of the tail ; the Idotea Entomon of Dr. Leach, Lin. Tr. vol. xi. 
p. 364. (caud4 apice tridentata) is the Oniscus Entomon of Pennant, but not of 
Linnaeus, both of which are referred to as synonyms by Dr. LeaCh ; the specific 
character of the Entomon of Linnaeus (cauda marking the distinction. 
