1903.] NATURAL SCIENCES OF PHILADELPHIA. -39 



by a network of fine dark lines ; in each segment laterad of the dorsal 

 line a short, light-colored transverse Hue; feet pale; first dorsal plate 

 and vertex of head hght-brown, covered with a network of fine dark- 

 brown lines; a dark, blackish band between eyes, with within near 

 middle two light fines diverging cephalad : a fight spot mesad from the 

 base of each antenna ; clypeal region fight-brown ; antemise dark. 



Head at vertex with a shallow median sulcus. Antennae in length 

 about equaling the width of the body: pilose, the terminal articles 

 densely so ; articles long. OceUi in a large triangular patch, about 50 in 

 number, arranged in 8 series. 



First dorsal plate smooth, not at all striate; other segments strongly 

 striate beneath, above with numerous longitudinal wavy fines; anterior 

 segments more strongly striate than the posterior. Posterior angle of 

 the last dorsal plate rounded, blunt, but little produced, not extending 

 beyond anal valves. Pre-anal scale convexly rounded in front and 

 behind, indented in the middle behind, the two curved margins meet- 

 ing at an acute angle on each side: mth two long bristles, other- 

 wise glabrous. 



Anal valves glabrous, marginate; the elevate margins crossed by a 

 series of transverse sulci; valves elsewhere roughened by numerous 

 longitudinal rugae. 



Repugnatorial pores smaU, not touching transverse sutm-e. 



Legs rather short, not extending beyond sides of body, sparsely 

 pilose, claw strong; last tarsal joint with a row of stout bristles (pulvilli 

 tar sales) projecting outward on each side (c^). 



Male: Stipes of mandibles strongly produced below; first pair of legs 

 greatly enlarged, reaching anterior margin of gnathochilariiun, nearly 

 straight, not bent or at aU hamate at end, very sparsely pilose, not 

 tuberculate ; coxae of second pair of legs meeting within and produced 

 forward into a narrow tongue-fike process with a round or button- 

 shaped appendage at end, at base of coxse a median pit which continues 

 forward along process as a shallow furrow; copulatory appendages 

 exposed; anterior plate set somewhat obliquely , very wide, clavately 

 enlarged upward, the outer or posterior border much produced back- 

 ward above base, concealing other pieces from front and side, inner 

 border indented below top, bent inward or backward, plate pilose with 

 numerous long hairs outward from bent border and along a fine below 

 and paraUel with upper margin; middle piece (as also outer one) shorter 

 than the anterior, subtriangular in caudal aspect, acutely pointed, with 

 fine, rather distantly placed teeth along sides which are not strongly 

 bent or roUed, inner basal portion produced forward, a hamate process 



