18 PROCEEDINGS OF THE ACADEMY OF [1892. 



below blackish ; ventral lines nearly parallel ; body covered with 

 black hairs. Epigyuum and palpal organs as figured ; eyes as in P. 

 rufula; cephalothorax widest behind the middle, head much nar- 

 rowed. 



Sev^eral specimens, under a stone near Fall Creek, Feb. 



Prosthesima immaculata, nov. sp. Plate I, fig. 58 and 58a. 



Total length $ (ylnim. 



Length of cephalothorax 2omm. breadth 2*8nim. 



Length of abdomen 3'8mm. breadth 2*2mm. 



Cephalothorax and mandibles brownish-yellow ; legs and palpi- 

 paler ; sternum yellow, darker on edges; epigynum reddish sur- 

 rounded by gray ; lower spinnerets longer and lighter colored than 

 upper ones ; abdomen above and below dark gray ; ventral lines 

 wanting; body and legs with blackish hairs ; a few white hairs on 

 abdomen. Upper side of Coxpe with many bristles ; eyes as usual ;. 

 a little black in lower row ; epigynum as figured. 



Rare. Sept., Fall Creek. . 



Prosthesima blanda, nov. sp. Plate I, fig. 57 and 57a . 



Total length $ l' mm.. 



Length of cephalothorax onim. breadth 2'lmm. 



Length of abdomen 4nim. breadth 2" mm. 



Cephalothorax browniish-yellow ; mandibles darker; sternum 

 red brownish-yellow ; lip very dark and maxilhe lighter ; legs and 

 palpi pale yellowish, brighter toward the tips; abdomen white above 

 and below ; spinnerets similar ; lung plates yellow ; two ventral 

 ■ lines grayish ; a yellowish spot at base of dorsum ; base of abdomen 

 densely clothed with stiff bristles ; body and legs with black hairs ; 

 upper row of eyes straight, no longer than lower ; palpal organ as 

 figured. 



One specimen. 



Prosthesima atra Ilentz. 



A few specimens which probably belong to this species, from Fall 

 Creek. 



Prosthesima depressa Em. 



Not uncommon. Fall Creek, Six Mile Creek, Oct. 

 Prosthesima ecclesiastica Hentz. 



Frequent ; often under bark in winter. 



