OF PHILADELPHIA. 19 



Cabinet of the Academy. 



Body spheroidal, somewhat oval, glabrous, polished, black • 

 head longitudinally semi-oval ; eyes sessile, near the base of the 

 head each side, remote; feet hairy, pale testaceous, subequal, 

 shorter than the body. 



I found this species several times under stones, &c. It is 

 sluggish in its movements, like other species of this genus ; 

 when alarmed or in danger the feet are thrown forward together 

 over the mouth, and the whole of the thorax is then deflected 

 upon the anterior part of the body ; in this state the general form 

 is a solid oval. 



Genus BDELLA Latr. 



Palpi elongated, terminated by setae; rostrum conic; eyes four; 

 posterior feet longest. 



B. OBLONGA. — Body oblong-oval, bright red, paler in the 

 middle and beneath, with a few scattered hairs ; rostrum nearly 

 half as long as the body, with two or three pairs of stouter 

 hairs ; palpi four jointed, resembling arms ; first joint destitute 

 of hairs and longer than the others conjunctly; second and third 

 joints very short; fourth joint longer than the two preceding 

 ones, attenuated towards the base and truncated at tip, with 

 several short hairs and two terminal setae longer than itself, of 

 which the inner one is rather shorter; feet hairy, subequal, pale, 

 the posterior ones rather longer. [75] 



Length rather more than one- twentieth of an inch. 



Found in Georgia, under stones, under bark of decaying trees, 

 &c., in rather moist situations. 



Genus IXODES Latr. 



Palpi short, simple, valvular, forming with the haustellum a 

 short rostrum ; mandibles none ; feet with a pedunculated pul- 

 villus and two nails ; eyes obsolete or wanting. 



1. I. ANNULATUS. — Body oval, pale reddish-brown, tinged 

 with sanguineous, particularly behind, and with several longi- 

 tudinal and oblique, black, abbreviated lines, scattered punc- 

 tures, and three abbreviated, longitudinal impressed lines behind ; 

 rostrum, with the palpi dilated, rather suddenly contracted at 

 base, and annulated more prominently beneath with about two 

 elevated lines, which on the sides produce an angulated appear- 

 1821.] 



