1908.] NATURAL SCIENCES OF PHILADELPHIA. 307 



nearly the same distance from the smaller lateral eyes (about 3 : 4) ; 

 anterior lateral eyes their diameter or rather a little less from the front 

 margin of clypeus, more than their diameter from eyes of second row; 

 eyes of second row less than their diameter apart; quadrangle of pos- 

 terior eyes more than one-fifth the length of the cephalothorax (1 : 4.5). 



Lower margin of the furrow of chelicerce with three teeth, of which 

 the middle one is usually a Uttle longest. 



Legs with tibia + patella IV longer than the cephalothorax, which 

 latter is longer than tibia + patella I; anterior tibia beneath with 

 three pairs of very long overlapping spines, the third pair being between 

 the middle pair and the distal end of the joint and truly ventral in 

 position (PI. X, fig. 9) ; patella II armed in front. 



Epigyniim with the posterior margin nearly straight; not excavated 

 mesally; the bulbs of the spermathecse contiguous mesally. (PI. XXII, 



fig. 9.) 



Total length, 2.4 mm. Length of cephalothorax, 5 mm. 



Length of leg I, 6.5 mm. ; tib. + pat., 2.2 nmi. ; met., 1.5 mm. 



Length of leg II, 6.2 mm. 



Length of leg III, 6.1 mm. 



Length of leg IV, 9.4 mm. ; tib. + pat., 3 mm. ; met., 2.8 mm. 



Syn. — 1890. Pirata elegans Stone, Proc. Acad. Nat. Sci. Phila., 42. 



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



1892. Pirata agilis Banks (ad. part), Proc. Acad. Nat. Sci. Pliila., 44, p. 72, 



PI. I, fig. 47. 

 1902. Pirata elegans, Montg., op. cit., p. 581, PL XXX, fig. 36. 



IPirata nigromaculatus Montg., ibid., p. 579, PI. 30, figs. 44, 45. 



1904. Pirata elegans, Montgomery, ibid., p. 310. 



. IPirata nigromaculatus, ibid., p. 310. 



Type locality. — New Hampshire (White Moimtains) and New York 

 (Adii-ondack Mountains at Long Lake). 



Known localities. — New York !, New Hampshire, Pennsylvania, Utah !. 



Pirata marxi Stone, 1890. 



(Proc. Acad. Nat. Sci. Pliila., 42.) 

 Female. — Sides of cephalothorax in fresh specimens obscure brown to 

 gray-black, crossed by many radiating lines of black; a yellow median 

 band of the typical form enclosing the usual bifurcate mark in front of 

 the dorsal groove, the mark coalescing on each side just in front of the 

 groove with the dark area of the sides; there is thus between the arms 

 of the V-mark a narrow median yellow stripe or line which extends 

 forward to the second eye row, and on each side of pars cepbalica also a 

 narrow line which extends forward beneath the eyes to the clypeus, but 

 which is disconnected with the median stripe behind; on each side a 



