The Genus Perilestes 15 



shaded darker; labrum and postclypeus black, the anteclypevis paler, dull 

 greenish or brown, the labrum sometimes with more or less brown. 



Prothorax brown above, narrowly on the front lobe, the sides pale, pro- 

 epimeron largely brown; hind border shallowly trilobed. 



Thorax above black, middorsal carina very narrowly brown, a narrow 

 pale greenish or yellowish antehumeral stripe, not reaching the antealar 

 sinus above, and projected across the prothorax below, about .3 wide at 

 the widest part ; mesepimeron largely black, the same broad band of color 

 carried across the mesinf raepisternum ; metepisternum lar^'ely pale yel- 

 lowish or flesh colored except above where a broad black band on the sec- 

 ond lateral suture crosses it to join the black oil the mesepimeron ; metepi- 

 meron pale colored like the metepisternum except where the pale area is 

 encroached on by the broad black band on the second lateral suture, a 

 limited area of dark to black above and below, and a narrow edge of black 

 on the latero-ventral carina posterior to its angle; the black stripe on the 

 second lateral suture is carried across the metinfraepisternum leaving 

 only its lower angle pale. Metasternum black. 



Mesostigmal lamina elevated into a low lobe just external to the end 

 of the fork of the middorsal carina; below (external to) this lobe the 

 lamina is low and nearly symmetrically convex. 



Coxae pale, marked with dark to black ; on the anterior face the first 

 coxa has a mere trace of dark, the second nearly the inner half dark, and 

 the third all dark but a narrow outer border; the posterior face of each 

 coxa darker than the anterior face, and again the first is the palest and the 

 third the darkest. Femora black, the last two and rarely the first each 

 with/ an anteapical anterior pale spot. Tibiae black with the anterior 

 surface pale. 



Venation black, main veins shading out, especially on the ventral sur- 

 face, to nearly white at base; stigma black, brown (but not reddish brown) 

 in tenerals. 



Abdomen seen from above : segment 1 pale, a more or less distinct nar- 

 row longitudinal middorsal stripe and an apical ring, brown ; 2 dark brown 

 except at base and a longitudinal middorsal pale stripe, not reaching the 

 apex; 3 with base pale, loUowed by a slightly darker area, followed by a 

 slightly more extensive pale area, which darkens posteriorly into a dark 

 area nearly or quite black at its middle, which occupies about one-third or 

 slightly less of the segment, and which fades out posteriorly into a pale 

 area about equal in extent to the pale area which bounds it anteriorly; 

 this pale area darkens posteriorly into a more extensive black area which 

 reaches to the apex; 4-6 similar to 3 but the pale basal area (a smooth 

 area lacking minute transverse striae) is scarcely paler than the dark 

 area which follows it, the large median dark area is relatively more ex- 

 tensive and the anteapical pale area which separates it from the apical 

 black is progressively reduced from 4 until it has quite disappeared on 6 ; 

 the'postbasal pale area is about the same extent on each of segments 3-6; 

 7-10 black. Seen from the side : 1 pale except at apex ; 2 pale below except 

 a basal spot at the inferior border; 3-6 as in dorsal view, except the post- 



