THE CRUSTACEA OF NEW JERSEY. 351 



surface of each finger with low longitudinal rib, bordered by 

 rows of punctures. Carpus about long as wide, shorter than 

 palm, with deep longitudinal groove above, and few more or 

 less distinct tubercles between groove and inner edge. Strong 

 l)ointed spine in middle of inner edge, straight, directed forward 

 obliquely. Tubercle on front edge of lower side, and another 

 lower at articulation with hand. Few more tubercles may occur 

 on inner edge and lower side, biit rarely spiniform. Alerus 

 smooth, ^vith one to three tubercles near distal end of upper 

 edge, lower side with external series one to four and inner series 

 seven to eleven, spiniform. Ischium of third perseopods hooked 

 in male, hooks in first form strong, subconic. Coxa of fourth 

 perseopods with strong and slightly compressed tubercle. 



First pleopods in male as in Caiiibarus bartonii_,t\\y of inner part 

 tapers gradually to point. 



Color brownish or greenish, somewhat variable. Carapace 

 and abdomen olive-green to rawumber, mummy-brown and fer- 

 rugineous, shading on sides through drab or russet to* fawn color 

 and whitish. Rostrum edges rufous or ferrugineous. Hand 

 tawny-olive to burnt sienna and rufous, shading to olive-yellow 

 toward outside. Bases of fingers often with distinct olive-green 

 shade, tips rufous, and hand tubercles cream-buff or whitish. 

 Legs ochraceous-'buff with olive-buff, or russet with olive-green 

 at joints. Lower body side rufous or pale orange-buff, or 

 whitish. Antennal flagellum annulated, dark olive-green and 

 whitish. Length 124 mm. 



Remarks. — The distribution is somewhat complex, and is 

 best expressed by Ortmann as follows : While in Pennsylvania 

 its boundaries are tolerably well known, it is quite different with 

 the rest of the range. This appears divided into two unequal 

 discontinued parts, as eastern and western. The former com- 

 prises, aside from a small section in southeastern Pennsylvania 

 along the Delaware River, the whole or portions of New Jersey, 

 Delaware, Maryland, District of Columbia, Virginia and North 

 Carolina. Here it seems to be found exclusively in the Coastal 

 Plain, not even entering the Piedmont Plateau. The western 

 range begins in southwestern Pennsylvania and northern West 



