ODONATA OF BAJA CALIFORNIA. 55 1 



(Trans, cited, p. 300). The characters given for Can- 

 nacria agree entirely with the present specimens, save 

 that the abdomen is stated to be as long as the hind 

 wings. Dr. Karsch ("/. c. p. 361) further states, " Kirby 

 has founded the genus Cannacria on a species described 

 as new, C. batesii, which I am not able to separate spe- 

 cifically from a typical male specimen of Erythemis fnr- 

 cata Hagen from Bahia (from Gomes) in the Konigliche 

 Museum fiir Naturkunde at Berlin; only that there are 

 in the hind wings not 6, but 7 antenodal cross-veins as in 

 the figure accompanying Kirby's description." 



The writer is not satisfied as to the specific identity of 

 fiircata Hag. and batesii YAxhy (Trans, cited p. 341, pis. 

 liii f. I, Ivii f. 9) for the following reasons: i. The figure 

 of the 6 appendages of batesii does not show the tooth on 

 the lower surface of the superiors which is here described 

 and figured iox fiircata. 2. Batesii is described and fig- 

 ured as having the abdomen with "a black dorsal band, 

 commencincj at the end of the third seo;;ment, and cover- 

 ing the middle of segments 4-9, and widened at the end 

 of each segment to cover the entire width." No such 

 band exists on the present specimens, nor is it mentioned 

 in Dr. Hagen's description. 



Little weight is to be attached to the fact that the di- 

 mensions of fiircata are given as, length 40 mm., alar 

 expanse 70 mm., and those of batesii as, length 48 mm., 

 alar expanse 80 mm., or to the difference in the number 

 of cross-veins. It is to be noted that althougrh the 2;eneric 

 characters of Cannacria include "abdomen as Ion"; as 

 the hind wings," the life-size figure of batesii shows the 

 abdomen to be 34.5 mm. long, the hind wing 37 mm. 



Lastly, it is to be noted that Mr. Kirby has described 

 a Cannacria Smithii [Ann. Mag. N. H. (6) xiv, p. 266, 

 Oct., 1894] from the West Indies. As is unfortunately 



