34 ASTACUS. LOBSTER. Class V. 



all ciliated ; body slender, compressed, smooth, 

 of twelve joints ; claws, two pairs of equal 

 size, imperfect ; legs ten ; caudal fins two pairs, 

 ends forked. Length half an inch. Color 

 reddish. 



Sg. Falca- Li7i. Tr. ix. 100./. 5./. 2. 



TUS. 



Hooh-fanged. * ^ ^^,jj.j^ ^^^^, cmteuncE ciliated beneath ; body 

 slender, smooth, compressed, of twelve joints ; 

 claws, two pairs of very unequal size, imper- 

 fect, the second pair the larger, and spinous at 

 the edges ; legs ten, the two anterior pairs very 

 minute. Caudal fins three pairs, subulate. 

 Color varied crimson. Length half an inch. 



30. Rhom- Li7i. Tr. vii. Qb. i. 6./. 1. 



BOIDALIS. 



RhomlwidaL .^ j^ ^^j^j^ ^^^^ aiitowcE not twicc the length of 

 the snout ; front broad, contracted into a 

 strait subulate snout ; eyes remarkably pro- 

 minent and reticulated ; thorax somewhat ob- 

 tusely quadrangular, with five large tubercles ; 

 claws two, equal, perfect, rather large 3 legs 

 eight, subulate, with a spine beneath on the 

 first joint of each. Color olive green. Length 

 a quarter of an inch. 



Found among sertulari(E, 



