THE CANADIAN ENTOMOLOGIST. 369 



in a recurved line, the median smaller than the lateral, and separated by 

 less than one-half the distance to the lateral. Chelicerse long, slender, and 

 divaricate at the tip, light brownish yellow, clothed on the sides and in 

 front with short black hairs, longer towards the tip ; inner margin with a 

 few long black setae ; upper margin of the furrow armed with three long 

 teeth. Sternum smooth, nearly white; sparsely clothed with short stiff black 

 hairs. Labium and endites light brown, the latter white at tip. Abdomen 

 nearly white, with a slight tinge of gray, very sparsely clothed with stifiF 

 black hairs. Legs light orange yellow ; femora of first and second legs 

 armed with one spine each, the others unarmed, each patella with one long 

 spine at tip, first and second tibiae with two dorsal and two lateral spines, 

 third with two dorsal spines, and fourth with one. Femur of palpus 

 cylindrical, patella short, and bearing a long spine, tibia armed with long 

 setje, arranged more or less in transverse rows ; tarsus with a distinct 

 emargination on the middle of the outer edge, accessory branch of the 

 tarsus slightly enlarged towards base, bent to form a horseshoe, with the 

 outer arm the shorter, armed near the middle with three small setse and 

 near the base with four minute hairs. On the inner side of the bulb there 

 arise two strongly chitinized projections, the dorsal, one serving as a 

 support to the slender, moderately long style, with which it is connected 

 by a hyaline membrane. Just outside of the base of the style there is a 

 short black process slightly bent at the tip, usually hidden by the other 

 parts. The lower surface of the bulb terminates in a blunt, weakly 

 chitinized tooth. (Fig. 20). 



On the caudal surface of the anterior coxae there is a series of oblique 

 striae which closely resemble the corrugations on the sides of the chelicerae 

 in Linyphia, and which have been considered by Cambridge as stridulating 

 organs. In this species the sides of the chelicerae are smooth. 



Explanation of Figures. 

 Fig. 20, Troglohyphantes cavo'nicolus, Keys. Male palpus from 

 below. 



Fig. 21, Troglohyphaiites cavernicolus, Keys. Male palpus from 

 above. 



Fig. 22, Troglohyphantes cavernico't(S,¥^ty%. Male palpus accessory 

 branch of tarsus. 



