ODONATA OF BAJA CALIFORNIA. 535 



Wings clear or faintly yellowish especially in basal half, 

 distinctly yellowish at base for not as much as the length 

 of one cell. Pterostigma black, membranule white or 

 slightly gray. 



$ Differs from the 3 as follows : frons light brown or 

 olive ; vertex brown, with a trace of metaUic blue in more 

 adult individuals; lips in some cases entirely pale green; 

 thoracic dorsum light brown, pale markings as in 3 ; 

 sides of thorax in some cases without any dark markings; 

 tarsal nails as in 3 , second and third femora without 

 teeth; markings of abdomen as in 3 but the pale colors 

 predominating over the black on 1-7; appendages black, 

 longer than 10, longer than the anal tubercle; vulva 

 marked by a small notch at apex of sternum of 8 ; 9 with 

 a mid-ventral, longitudinal keel and a small palp on each 

 side thereof; wings clear, front wings more or less yellow 

 from base to the outer side of the triangle, hind wings yel- 

 low for an equal distance in costal, subcostal and median 

 spaces; apex of all the wings brown, commencing at 

 about one cell on the basal side of the pterostigma. 



S $ Front wings with 10-12 antecubitals, 5-8 postcu- 

 bitals, discoidal triangle free, internal triangle of one cell 

 (2 in one wing i 3 , 3 in one wing i ? ), two rows of post- 

 triangular cells. No supratriangulars, one median cross- 

 vein. Hind wings with 7-9 antecubitals, 6-9 postcubitals, 

 triangle free, one ( 3 ) or two (?) rows of post-triangu- 

 lar cells, sectors of the triangle slightly separated at their 

 origins in a few specimens. 



Total length S 33-36, ? 34-35. Abdomen S 23.5-25, ? 

 24.5-25. Hind wing 3 24.5-28, ? 29.5. Pter. 2. Width 

 of abdomen of 6 at 2: 1.4, at 5: .9, at apex of 7: 2.6-3, 

 at 10: I. 



Ineqiiiunguis is especially characterized by having the 

 tarsal nails toothed before the apex, not bifid as in typical 



