The Genus Perilestes 31 



f raepisternum ; metepisternum pale, flesh colored below and yellowish above 

 and behind where there is a black stripe along the second lateral suture ; at 

 midheighth this black stripe is about .1 wide, above it leaves the suture 

 andi angles obliquely foi-ward and upward about half across the upper 

 end of the metepisternum, below it ends against the metinf raepisternum ; 

 metepimeron pale flesh, almost white, bright rust colored below, this color 

 continued across the upper part of the metinfraepisternum where it passes, 

 at the extreme antero-ventral angle, into black. Metasternum pale like 

 the metepimeron, a black longitudinal median line from the hind coxae 

 posteriorly to nearly the level of the angle in the latero-ventral carina. 



]\Iesostigmal lamina very slightly concave above throughout its length, 

 at its outer end produced into a free triangular outwardly directed point. 



Coxae pale, the third pair shaded a darker rust color on the anterior 

 face. Femora pale, tinged yellowish or reddish, black at the apex, this 

 black carried basally a third to a half the length of the femur on the anterior 

 face of the first and second femora, the first femora the darker. Tibiae pale 

 reddish like the femora, the anterior face paler and yellowish rather than 

 reddish. 



Venation black, veins shading out to light brown at the wing base; 

 stigma reddish brovrn (Sanford's brown, Eidgway). 



Abdomen seen from above: largely dark to black with restricted pale 

 markings; 1 with a narrow median longitudinal black bar, joined at the 

 apex with a narrow black transverse ring ; 2 with a corresponding but wide 

 black bar which laterally extends far below the level of the black on 1 and 

 to the level of the black on 3, a narrow median longitudinal pale bar from 

 base to about four-fifths its length ; 3-7 black, each with a narrow transverse 

 pale blue or yellowish basal ring and a pale median dorsal stripe extending 

 posteriorly from it, nearly to the apex on 3, and successively narrower and 

 shorter posteriorly till on 7 it is scarcely evident or may occupy as a maxi- 

 mum one-third the length of the segment ; 8-10 unmarked, with restricted 

 traces of paler color on the base of 8. Seen from the side : 1 pale except 

 the dark apical ring; 2 with about the ventral half pale, the ventral pale 

 and dorsal black areas meeting in a nearly straight line ; 3-7 each with the 

 ventral margin narrowly pale from the base, where it joins the pale basal 

 ring, to near the apex; 8 has a pale ventral border from base to apex but 

 in this case the color is distinctly blue, not merely pale or yellowish as on 

 3-7, though in life 7 at least may show the same blue color; 9 has the ex- 

 treme ventral edge blue, 10 is blue below, the dorsum black. Sternum of 

 1 pale ; of 3 pale with a longitudinal black streak, widening into a bar, from 

 the base to near the apex of the lateral pale color of the tergum where it 

 fades out to again reappear in the apical black of the tergum ; or the dark 

 color may extend continuously from base to apex without any pale inter- 

 ruption ; 4-6 similar, but there may or may not be a short postbasal inter- 

 ruption of the black streak of about the same extent as the anteapical in- 

 terruption ; 7 blue with a median streak corresponding to that on 6, but 

 lacking in the apical part ; 8-10 blue, densely pigmented, usually faded to 



