66 Mr. Montagu's Description of Marine Animals 
convex beneath, toothed: antennae four, setaceous, the upper pair 
longest, exceeding the length of the maxillae : eyes scarcely pro- 
duced, fixed, punctated : arms and legs without distinction ten, 
subulate: tail small, flat, cylindric, with six joints, terminated 
with bristles : a few scattered hairs on other parts of the tail and 
legs : colour, when alive, brown. 
Length, a quarter of an inch. 
This singular insect has full as much the appearance of an 
Oniscus as a Cancer ; but the formation of its tail, which is arti- 
culated, and received into a proper channel beneath the body, 
seems to demand a preference to the latter ; though perhaps, irt 
fact, it does not strictly belong to any of the Linnaean genera* 
Cancer Phasma. 
Tab. VI. Fig. 5. 
Cancer linearis. Linn. Syst. p. 1056. Gmelin Syst. p. 2992. Bast. 
Op. Subs. 1. p. 32. t. 4./. 11. Tnrton Linn, iii. p. 761. 
Oniscus scolopendroides. Pall. Spic. Zool. 9- t. 4. jf. 15. 
Cancer Atomos. Linn. Syst. p. 1056. GmeL Syst. p. 299%. Brit. 
Zool. iv. 1. 12./. 32. Turt. Linn. iii. p.l6l. 
With a slender body of six joints, independent of the head : on 
the first joint are two spines, a third on the forepart of the second 
joint, and a fourth on the head, all pointing forward : the rest of 
the body smooth : antennae four, the upper pair nearly as long as the 
body; lower pair half that length, and the extreme joint of each 
pectinated with bristles : eyes fixed, reticulated, usually of a red- 
dish colour : close to the mouth are two very short palpi, or feel- 
ers, with hooked claws ; behind these are two others much longer, 
armed with single moveable fangs : on the first joint of the body 
are 
