ODONATA OF BAJA CALIFORNIA. 553 



For the female of coUocata, Hagen says (I. c. 1874) 

 "the appendages are yellowish, but the quadrangular 

 black dorsal spot on the segments 4-10 [/". e. of simflici- 

 collis] is wanting; only the sutures and margins of all 

 the segments are black." In a female from Los Angeles, 

 Cal., by Dr. A. Davidson, in the writer's collection, there 

 is only a narrow black stripe running along the mid-dorsal 

 longitudinal carina of 3-9, but in the four females from 

 San Jose del Cabo, October, 1893, this stripe is slightly 

 but distinctly wider on the apical halves of 4-7, and be- 

 comes an apical spot on 8-9; this difference between this 

 form and the typical simflicicoUis is therefore one of but 

 slight degree. 



It seems doubtful if collocata can rank even as a va- 

 riety. Abdomen 6 27-29.5, ? 26-28. Hind wing 5 30- 

 32, $30.5-32.5. 



Distribution (of simpIicicoUis). United States east of 

 the Rocky Mountains, Mexico (Matamoras, Huastec), 

 West Indies, Bahamas; of collocata, according to Hagen, 

 1875, Texas, Yellowstone, California — to which must 

 now be added Baja California. 



Appendix on certain species from California. 



Sent with the others by the California Academy of 

 Sciences. 



Calopteryx maculata Beauvois. 



Hagen, Psyche v, p. 249, 1889. Calvert, Trans. Am. Ent. Soc. xx, 

 p. 227, 189.3. 



One male, California. This species, common through- 

 out the eastern United States, has not hitherto been known 

 west of Kansas. 



EuTHORE FAsciATA Hagen. 



Thore f. Hagen, Syn. Calopt. p. 70 (1853), etc. E. f. Selys, Bull. 

 Ac. Belg. (2) xxvii, p. 676 (1869). 



