552 CALIFORNIA ACADEMY OF SCIENCES. 



too often the case, Mr. Kirby omits all reference to struct- 

 ural details from his description, and there is nothing to 

 show that St)iithii differs specifically from Batesii. 



Distribution (^oifurcata). Mexico (Baja California as 

 above, Tampico), Cuba, Jamaica (i ? by C. W. John- 

 son), Bahamas (i 5 Nassau, New Providence, November 

 12, 1890, by J. P. Moore and D. J. Bullock), Brazil 

 (Bahia). 



Mesothemis Hagen. 



Hageu, Syu. Neur. N. A. p. 170, 1861. Biauer, Verb. Zool. Bot. 

 Ges. Wieu xviii, p. 721, 1868. Kirby, Trans. Zool. Soc. Lond. 

 xii, p. 303, 1889. Calvert, Trans. Am. Ent. Soc. xx, p. 225, 

 1893. 



40. Mesothemis simplicicollis Say, var. collo- 



CATA Hag. PI. xvii, figs. 103-106. 



M. c. Hageu, Syu. Neur. N. A. p. 171, 1861; Rep. U. S. Geol. Sur. 

 Terr. 1873, p. 587, 1874; Proc. Best. Soc. N. H. xviii, p. 77, 

 1875. 

 2 3 San Jose del Cabo, not dated. 



1 ? Sau Jose del Cabo, May, 1893. 



San Jose del Cabo, September, 1893, G. Eisen. 



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



Mesa Verde, October, 1893, G. Eisen. 



Miraflores, September, 1894, Eisen & Vaslit. 



San Jose del Cabo, September, 1894, Eisen & Vaslit. 



605 10? 

 Jlf. collocata closely resembles J/. simflicicoUis; for the 

 males the only difference given is that in the latter the 

 superior appendages are yellow, in collocata black even 

 in the teneral condition. The above males have the ap- 

 pendages almost black, but in one or two the appear- 

 ance strongly suggests that they may have been 3^ellow 

 when 3^ounger; no structural difference appears to exist 

 to define them from siniplicicollis, but they have a trans- 

 verse brown band on the anterior surface of the frons, 

 wanting in the latter. 



