OF PHILADELPHIA. 31 



lured beneath. 1 have a fortuitous variety, of which the aatennse 

 are clavate and five jointed. 



;J. C. POSTiCA. — Terminal segment of the body longest; pos- 

 terior feet very short and robust. 



Inhabits Georgia and East Florida. 



My ('abinet. 



Body rufous, paler beneath, punctured ; segment with two im- 

 pressed, longitudinal lines above, and a deeply impressed one 

 beneath ; ultimate segment longer than the two preceding ones 

 conjunctly, with two [113] obsolete, impressed, abbreviated 

 lines at base, and an intermediate more distinct, continued one ; 

 posterior feet remarkably robust, hardly longer than the ultimate 

 segment ; nail very robust, as long as the two preceding joint? 

 conjunctly. 



A very remarkable species, distinguished at once from all 

 others, by the very thick and short posterior pair of feet, the 

 nails of which cross each other, and are much used by the animal 

 in its defence. 



Genus GEOPIIILUS. 



Posterior pair of feet not remarkably longer than the others ; 

 eyes obsolete. 



1. G. RUBENS. — TJody attenuated before and behind ; terminal 

 pair of feet hardly longer than the preceding pair. 



My Cabinet. 



Body broadest in the middle, impunctured, red, with short 

 hairs, more numerous on the antennae and feet ; segments with 

 two longitudinal impressed lines, and a transverse acute one near 

 the base of each ; ultimate segment somewhat longer than the 

 preceding, narrowed and rounded at tip ; head beneath, with a 

 blaeki.sh spot each side at the base of the mandibles, and another 

 at base of the terminal joint ; labium with a profound fissure, nut 

 dentated ; antennae, terminal joint longer than the preceding 

 ones, and of equal diameter, not attenuated ; feet subequal. 



Very common in decaying wood, under stones, &c. [114] 



2.. G. ATTENUATUS.-.— Body attenuated from the head ; posterior 

 feet longer than the others. 



Inhabits the Southern States. 



Body broadest before and gradually attenuated to the tail ; 

 reddish-brown, with a few hairs ; head and ba-ic of the mandibles 

 1821.] 



