582 PROCEEDINGS OF THE NATIONAL MUSEUM. 



Family PHOLCID.E. 



PHYSOCYLUS GIBBOSUS (Taczanowski). 



An immature specimen, probably of this species, from Catalina 

 Springs, April. 



Family DRASSID^E. 



PROSTHESIMA ATRA (Hentz). 

 One male from Catalina Springs, April. 



PROSTHESIMA ARIZONENSIS, new species. 



Length of female, 7 mm. 



Cephalothorax yellowish brown, black aromid eyes; mandibles 

 rather darker than cephalothorax; legs yellowish brown, rather darker 

 on tips; sternum more reddish brown, black on margin; abdomen dull 

 black above and below, spinnerets pale yellowish. Cephalothorax 

 considerably narrowed in front, quite flat, dorsal groove distinct. 

 Posterior eye-row slightly procurved; posterior median eyes oval, 

 less than their diameter apart, about as close to the equal posterior 

 side eves; anterior eye-row nearly straight; anterior median eyes fully 

 diameter apart, nearly touching the equal anterior side eyes, about a. 

 large as posterior median eyes; quadrangle of median eyes much 

 higher than broad, and as broad in front as behind. Legs of moderate 

 length tibia I with one pair of spines at tip beneath, metatarsus 1 

 with three pairs below, one of which is at the tip; metatarsus not 

 scopulate; many spines on hind legs. Sternum nearly oval, broadest 

 behind coxfe 11. Abdomen depressed, truncate at base, nearly one 

 and three-fourths as long as broad, broadest behind middle; epigynum 

 shows a narrow transverse cavity open behind into a short, widening 



cavity. 



One female from Catalina Springs, April. 

 Type.— C^t. No. 5424, U.S.N.M. 



PROSTHESIMA SCHWARZI, new species. 



Length of female, 12 mm. 



Cephalothorax yellowish brown, black around eyes; mandibles 

 yellow-brown; sternum more red-brown; legs yellow-brown, anterior 

 metatarsi and tarsi much darker; abdomen pale yellowish gray above 

 and beneath, black hairs at base, spinnerets more yellow. Cephalo- 

 thorax rather broad in front. Posterior eye-row plainly procurved, 

 not broader than anterior eye-row, eyes widely separate; the posterior 

 median eyes oval, more than their diameter apart, more than twice 

 their diameter from the smaller posterior side eyes; anterior eye-row 

 little procurved, anterior median eyes larger than posterior median 

 eves, about diameter apart, much closer to the nearly equal anterior 



