542 CALIFORNIA ACADEMY OF SCiENCES. 



third with an inferior row of 6-7 denticles. Inferior ap- 

 pendage about one -seventh shorter, very distinctly nar- 

 rowed in its apical half (viewed from below) so that the 

 lateral margins are decidedly concave, extreme apex 

 slightly notched. 



Anterior lamina biparted when viewed in front, each 

 half prolonged backwards towards the hamule and denti- 

 culated on the margin. Hamule not as prominent as the 

 genital lobe,* its apex bifid, inner branch longer, hooked, 

 outer branch very short, obtuse. Genital lobe as wide as 

 long, rounded. 



Legs blackish, first femora pale green below, third tibiae 

 with 11-13 spines on the anterior row, spines slightly longer 

 than the intervals separating them. 



? Similar to 5 . Abdomen of nearly uniform width. 

 Vulvar lamina reaching to one-third of 9, its margin with 

 a wide but shallow median emargination. Two small 

 ventral palps on 9. Appendages longer than 10, not 

 quite as long as 9, simple, straight. 



S ? Front wings with 6-10 antecubitals, 6-9 postcu- 

 bitals, discoidal triangle free, internal triangle 3 -celled 

 (2- celled in one wing of i 6 i ? ), 2 or 3 post-triangular 

 cells, then two rows, afterwards increasing. Hind wings 

 with 6 antecubitals, 7-9 postcubitals, a reddish -brown 

 ( 5 ) or ye'lowish (?) cloud at the extreme base, of great- 

 est extent in the median space where it may extend out- 

 wards three-fourths-way to the cross-vein. Pterostigma 

 blackish-brown, membranule brown. 



Variations of generic significance: Last antecubital of 

 the front wings continued to the median vein in both 

 wings in i 5 2 ? , in one wing only of i 5 • Sectors of 



^Figiire 95, plate xvii, shows the reverse, owing to the jirotrusiou of the 

 penis; the text is correct for the more frequent condition of retraction of 

 the penis. 



