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 Sertuhria, 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. Til, k convex 



