OF PHILADELPHIA. 23 



rectilinear, or undulated series. I have found them about the 

 middle of May. 



Genus LEPTUS Latr. 



Feet six ; trophi forming a capitate body ; palpi conic, quadri- 

 articulate ; an obtuse tube, subconic, advanced ; body soft. 



1. L. ARANEii [aranEuE]. — Body oval, red, with short, dis- 

 tant hairs; head whitish, somewhat rounded, [81] contracted, 

 at base and acute at tip ; palpi white, a little hairy, rather sur- 

 passing the tip of the head ; tergum with a deeper red eye on 

 each side over the interval between the anterior and second pairs 

 of feet, anteriorly indented, and with two lines each of four or 

 five indented points. 



Length one-thirtieth of an inch. 



Cabinet of the Academy. 



Of this species, I have found a specimen adhering near the base 

 of the palpi of an Aranea. 



The head-like process, is sometimes retracted so as to be not 

 prominent, but is not long withheld in this position. The body 

 is somewhat contractile, not perceptibly as regard its length, but 

 in its breadth, by an irregularly undulated motion of the edge. 



2. L. HISPIDUS. — Body suboval ; head with a distinct neck ; 

 palpi more robust at base ; feet elongated, much longer than the 

 body, filiform and furnished with numerous robust, incumbent, 

 flexible setee, about twice the diameter of the leg in length. 



My Cabinet. 



I took no less than ten of these animals from a Phalangium, to 

 which they adhered very strongly ; when feeding, they often are 

 .supported only by the rostrum and palpi, the body and feet being 

 elevated so as to be sometimes perpendicular to the supporting 

 surface. [82] 



Genus OCYPETE Leach. 



Feet six; mouth rostrated, porrected, with mandibles; palpi 

 elongate-conic, with a moveable appendage at base ; body soft ; 

 eyes two. 



O. COM ATA. — Body sub triangular, very obtusely rounded 

 behind, hirsute, and narrowed by an arquated line to the rostrum : 

 rostrum short, narrowed and emarginated at tip ; posterior feet 

 1821.] 



