148 Proceedings of the Biological Society of Washington. 



chitinous ridge on each side, this with anterior 

 end free and often cornuate ; (tibia of male pal- 

 pus with an apophysis at distal end that is long 

 and laminate, and unbranched). 



Haplodrassus, gen. nov. 

 ff. Posterior median eyes circular, their diameter or 

 more apart; epigynum with no such anteriorly 

 freely ending ridges or rims. 



Hind spinnerets not longer than the anterior, 

 the second joint very short or obscure; 

 (tibia of male palpus with apophysis on 

 ectal side, this short and bicornuate). 



Orodrassus, gen. nov. 

 66. Upper margin of furrow of chelicera with from four 

 to six teeth, the lower margin with two or three 

 small teeth or nodules, or rarely the upper margin 

 with only three weak teeth and the lower with but 

 one. 

 f. Posterior row of eyes straight or but little pro- 

 curved with the eyes typically nearly equidis- 

 tant, the medians small or at most but little 

 larger than the laterals; bulb of male palpus 

 with no median ventral and no ectal apophysis, 

 but with one or two distal chitinous ridges or 



apophyses Zelotes Gistl. 



ff . Posterior row of eyes procurved, the medians close 

 together or contiguous, larger than the laterals, 

 usually much so, oblique; bulb of male palpus 

 with a conspicuous median ventral apophysis 

 and with an ectal apophysis as well as a distal 

 one Drassyllus, gen. nov. 



Herpyllxjs Hentz. 



Amer. Jour. Sci. and Arts, 1832, 21, p. 102; Spiders U. S., 1875, p. 90. 

 Scotophaeus Simon, Hist. Nat. Araign., I, 1893, p. 371. 



Genotype. — H. vasifer (Walckenaer). 



Simon in his key to genera (Hist. Nat., I, 368) gives as a distinguishing 

 feature of Herpyllus that the posterior row of eyes is strongly recurved. 

 However, this is not true of the genotype, in which this row is essentially 

 straight, or of any of the American species congeneric with it. The pos- 

 terior row is at most moderately procurved. On the contrary, these species 

 conform fully to Scotophaeus as defined by the author mentioned (op. cit., 

 p. 371) and as represented by the European species referred to it, not only 

 in eye characters but in other structural features as well. Hence, Sco- 

 tophaeus is placed as a synonym of Herpyllus. 



