ISOPODS OF NORTH AMERICA. 



447 



and sometimes with a feeble tootli on its posterior inaruiii; distribu- 

 tion of hairs as in the species mentioned. The ' daw,' formed by the 

 seventh joint and the claw itself, sliohtly lono-er than in >lS'. oecidcntah' 

 and more hairy at the lower margin. In tiie young, probably also in 

 the adult female, the hand ditt'ers somewhat in shape from those of 



Fig. ,502.— Stenetru'm antillense (After Hansen), a, Adult male. '.t. h. First leg ok 



ADVI.T MALE. X 16. C, HEAD OK ADULT MALE. X 24. d, ABDOMEN OK IMMATIKE FEMALE. X 36. 



(^', Distal PART OF LEFT MANDIBLE X 12.5. /, Distal PART OF RIGHT MANDIBLE. X 125. (/, Distal 

 part of lobe from third joint of left maxillula. x 185. /(,, left mandible of male. x 49. 

 (, First ki(;ht leg (terminal part) of another male, x 28. ./, Paragnatha of male, x 49. 

 k. Distal part of left leg of im.mature female, x .53. I, Left maxilliped of mat.e. x 49. 

 in. Left maxilla of MALE, x 49. »i, Left maxillula of male, x 49, 



the two preceding- species: as in 8. occidentaie it is a little more than 

 half as long again as broad, but the lower margin is comparatively 

 longer, measured to the l)ase of the lower sawtooth of the palmar edge 



