ODONATA OF BAJA CALIFORNIA. 51I 



A. W. McLach., Eut. Mo. Mag. xx, pp. 127, 171, 1883. Hageu, 

 Psyche, v, p. 306, 1890. A. valldus Hagen, Proc. Bost. Soc. N. 

 H. xviii, p. 32, 1875. Cabot, Mem. Mns. C. Z. viii, p. 15, 1881. 



'2 i El Paraiso, undated. 



1 Sau Raymundo, Ai^ril, 1889, C. D. Haines. 



3 Sierra El Taste, September, 1893, G. Eisen. 



5 Coral de Piedras, Cape Eey, September, 1893, G. Eisen. 



1 1 $ San Jost? del Cabo, September, G. Eisen. 



14 4 San Jose del Cabo, October, 1893, G. Eisen. 

 3 Mesa Verde, October, 1893, G. Eisen. 



2 1 Miraflores, September, 1894, Eisen & Vaslit. 



1 Sau Jose del Cabo, September, 1894, Eisen & Vaslit. 



31.^ 7? 



Differs from Hagen's description of 1890 (I. c), as 

 follows: occiput pale blue; eyes above greenish-blue, 

 below yellowish-green; the fine black line bordering the 

 frons anteriorly often absent; thorax probably blue in 

 life ; the dorsal black or dark brown abdominal band be- 

 gins on segment 3 instead of 5 ; pale markings of the ab- 

 domen of the female green instead of blue; basal spots 

 on 8-9 blue, sometimes absent on 9; 10 reddish-brown 

 with a small blue spot each side. 



Front wings with discoidal triangle 3-7-celled, 4-6 me- 

 dian cross-veins, not forming an internal triangle, 2-3 

 supratriangulars, first and sixth or seventh antecubitals 

 thicker. Hind wings with discoidal triangle 3-5-celled, 

 3—5 median cross-veins, not forming an internal triangle, 

 1-2 supratriangulars, first and fifth, sixth or seventh ante- 

 cubitals thicker. 



Total length 5 105-115, ? 88-96. Abdomen $> 77-90, 

 ? ^1-12- Hind wing 5 56-62, ? 56. 



Distribution. Baja California (as above), California, 

 Arizona, Guatemala. 



2d Ser., Vol IV. ( :!4 ) February 19, 189.5. 



