found on the South Coast of Devonshire. 65 
The honourable Society may, however, be assured of the accu- 
racy of the outlines represented on the annexed Tab. VI., which 
were taken by myself; and may equally rely on the faithful re- 
presentations of the drawings of Tab. VII., which were taken 
from the living animals by an ingenious friend, whose merit of 
execution is not more conspicuous than strict attention to cha- 
racter. 
Cancer rhomboidalis. 
Tab. VI. Fig. 1. 
With an uneven subrhomboidal thorax, destitute of spines, but 
furnished with three large tubercles on the fore part, and two 
others near the tail : front a broad thin concave plate, projecting 
into a long sharp-pointed proboscis : antennae two, setaceous, 
longer than the proboscis : eyes vastly large, prominent, reticu- 
lated, pedunculated, nearly half the diameter of the thorax: arms 
large in proportion, smooth; on the first joint beneath a hooked 
spine, turning inwards ; fangs toothed : legs eight, subulate ; a 
long spine on the first joint of each, underneath : tail nearly as 
long as the body, slender, cylindric-depressed, formed with five 
joints; the end truncated, hirsute: colour, when alive, light 
olive-green. 
Length, from the point of the proboscis to the end of the tail, 
a quarter of an inch. 
Found amongst Sertularia, on the back of Cancer dodecos. 
Cancer maxillaris. 
Tab. VI. Fig. 2. 
With a subcylindric body of six joints, the anterior one largest; 
front armed with large, strong porrected jaws, concave above, 
vol. vii. k convex 
