1908.] NATURAL SCIENCES OF PHILADELPHIA. 309 



tibifp armed below with two pairs of spines in the usual position, 

 shorter than usual in this genus, those of the first pair not over- 

 lapping the bases of the second, to which they usually do not fully 

 extend ; all tarsi subsparsely setose. 



The epigynum is a large quadrangular area which is somewhat wider 

 in front than behind, the lateral margins being substraight and a little 

 converging caudad ; the posterior border is angularly excavated at the 

 middle and the spermatheca open on each side caudad directly into the 

 excavation, their terminal portions often showing darkly through the 

 chitinous wall. (PI. XXII, fig. 8.) 



Total length, 7.2 mm. Length of cephalothorax, 3.2 mm.; width, 



2.2 mm. 



Length of leg I, 8.7 mm. ; tib. + pat., 3.1 mm. ; met., 2 mm. 



Length of leg II, 8.1 mm. 



Length of leg III, 7.9 mm. 



Length of leg IV, 10.6 mm.; tib. + pat., 3.5 mm.; met., 3 mm. 



Male. — Coloration as in the female. 



Tibia of the palpus longer than the patella, of the same thick- 

 ness (seen from above) ; tarsus much broader than the tibia. 

 Principal branch of apophysis of conductor long, curving outward 

 above; basal branch relatively large; base of apophysis farther caudad 

 than usual. (PL XXI, fig. 8.) 



Total length, 5.6 mm. Length of cephalothorax, 3 mm.; width, 



2.3 mm. 



Length of leg I, 8.5 mm. ; tib. + pat., 3.1 mm. ; met., 2.1 mm. 



Length of leg II, 7.9 mm. 



Length of leg III, 7.3 mm. 



Length of leg IV, 10.4 mm. ; tib. + pat., 3.2 mm. ; met., 3 mm. 



Syn.— 1885. Pirata piratica Emerton (non CI.), Tr. C. Acad. Sci., 6, p. 492, 

 PI. 48, figs. 7 to 7b. 



1890. Pirata piratica Marx, Proc. U. S. N. M., 12, p. 564. 



1891. Pirata piratica Marx, Proc. Ent. Soc. W., p. 161. 



1892. Pirata piratica Banks, Proc. Acad. Nat. Sci. Phila., 44. 

 1902. Pirata jriratica Emerton, Com. Sp. U. S., p. 84, figs. 208, 209. 



1902. Pirata niarxi, Montgomery, Proc. Acad. Nat. Sci. Phila., p. 582, PI. 



XXX, fig. 47. 

 1904. Pirata marxi, Montgomery, ibid., p. 309, PI. XIX, fig. 27. 



Type ZocaZ%.— Pennsylvania (York County). 



Known localities. — Massachusetts!, Connecticut, Rhode Island!, New 

 York !, District of Columbia. 



Pirata insularis Emerton, 1885. 



(Tr. Conn. Acad. Sci., 6, p. 492, PI. 48, figs. 8, 8a.) 

 Fe77iale.— Sides of cephalothorax brown crossed by radiating Unes of 



