ODONATA OF BAJA CALIFORNIA. 5OI 



(in reality antehumeral) stripe present, which may, as in 

 one female, unite above with the superior spot; lateral 

 basal and apical yellow spots on 8 confluent in two fe- 

 males ; apical, lateral spot on 9 larger; streak on middle 

 of inferior, lateral margin of 3-7 greenish rather than 

 yellowish; dorsum of 10 mostly yellow, basal third or 

 fourth brown. Appendages about twice as long as 10, 

 yellow, sharply pointed, extreme tip black in three 

 females; de Selys' description of 1878 speaks of these 

 appendages as "as long as 10." No inferior carina to 

 first tibiae. Brown spot at base of wings reaching to 

 basal subcostal cross-vein. Vulvar lamina more than 

 one-third as long as 9 on the sides, about one-fourth as 

 long at the middle, with a rounded median emargination 

 extendincr almost to the base of the lamina, and a shal- 

 lower emargination on each side, making three in all. 



5 ? Triangle of front wings with upper and inner sides 

 of equal length in at least 261?, divided into three 

 cells by three veins which meet in the center; internal 

 triangle 2-celled by a vein parallel to its upper side,* 

 3-celled in one wing of i ? , Hind wings with upper side 

 of triangle longer than inner side, triangle 3-celled as in 

 front wings (4-celled in i 2 , 2-celled in 2 2 , asymmetric- 

 al — 2 right, 3 left — in i 5 ) ; internal triangle 2-celled by 

 a vein parallel to its outer side,* or free in 5 3 i ? . A 

 basal subcostal cross-vein (Karsch) present on all the 

 wings, or absent in one hind wing in 2 ? , or in both hind 

 wings 2 6 I ? 5 or on all the wings i $ . Three or four 

 post -triangular cells, then two rows on all the wings. 

 No coloring at the arculus, the sectors of which are al- 

 ways separate at their origin. Front wings with 14-16 

 antecubitals, first and fifth (sixth or seventh in i (5 i ? ) 



"In both front and hind wings the vein dividing the internal triangle 

 into two cells is transverse to the greatest dimension of the triangle. 



