THE SPIDER CBABS OF AMERICA 



55 



Description. — A hairy species. 

 Cardiac region with a large conical 

 elevation; two median gastric tu- 

 bercles, the anterior the smaller; 

 two blunt median tubercles on first 

 segment of abdomen. A prominent 

 strapshaped spine on hepatic re- 

 gion; a small, similar one on the 

 pterygostomian ridge, and a still 

 smaller postorbital spine; some spi- 

 nules in front of the angles of the 

 buccal cavity, a few of which are 

 visible in dorsal view. Orbital arch 

 finely spinulous. Rostrum a long, 

 slender, gradually diminishing 

 spine, varying from three-fifths, in 

 the largest, to one-half, in the smal- 

 lest, as long as the postrostral por- 

 tion of the carapace. Antennae 

 overreaching the rostrum, filiform, 

 the movable articles of the peduncle 

 as well as the flagellum unusually 

 slender; the basal article has lam- 

 inate anterior and outer margins, 

 the latter spinulous. 



Chelipeds moderately enlarged, 

 spinulous, especially on and near 

 the margins, and hairy, the hairs 

 entangling mud, foraminifera, etc. 

 A spine at outer distal end of me- 

 rus; a stout, spinuliferous knob on 

 outer surface of carpus; chela widest 

 behind middle of palm, thence ta- 

 pering to end of fingers; gape cor- 

 respondingly narrow, one tooth on 

 the dactyl at middle of gape may 

 be somewhat enlarged. First am- 

 bulatory leg three times (in largest 

 specimen) as long as carapace with 

 rostrum ;merus and propodus equal, 

 nearly twice as long as carpus and 

 three times as long as dactylus, 

 which is very slender and slightly 

 curved. Dactyli of remaining legs 

 falcate. In the second leg the car- 



