Zool.-Vol. I.] CALVERT— ODONATA. 391 



Here also belong the 17 males from San Jose del Cabo, 

 October, 1893, briefly described on p. 525, Proc. Cal. 

 Acad. Sci., 2d Ser., Vol. IV. As some of these Tepic 

 males are, however, younger individuals, and as the female 

 sex is also represented, I have briefly described them to 

 supply certain deficiencies in the passage quoted. 



There are a number of allied forms or varieties occurring 

 in Central and South America, differing apparently only in 

 slight color variations of the parts above mentioned, but not 

 structurally or in neuration. 



27. Brechmorhoga mendax Hagen. 



Dythemis mendax Hagen, Syn. Neur. N. Am., 1861, p. 1864; Calvert, Proc. 



Cal. Acad. Sci., 2d Ser., Vol. IV, 1893-94, p. 529, PI. XVI, figs. 56 and 57. 

 Brechmorhoga mendax Calvert, Proc. Bost. Soc. Nat. Hist., Vol. XXVIII, 



1898, p. 313, PI. I, fig. 5; PI. II, figs. 23, 30. 



The male has the frons and vertex metallic blue, the discoidal triangle of 

 the right front wing free. 



Hagen (1. c.) says "segments 1-7 with a double spot each side upon the 

 dorsum greenish white;" in one of his two male types these spots are very 

 small on 6. 



i $ i ? Tepic, Nov., 1894, Eisen and Vaslit. 



The genus Brechmorhoga was established by Mr. Kirby 

 for B. grenadensis, sp. nov., from Grenada, West Indies. 1 

 Mr. K"irby, in reply to my query, has kindly written: — 



"I have examined the specimens of Brechmorhoga, and find that the tar- 

 sal nails are toothed close to the tip, but the lower tooth is decidedly shorter 

 than the other. As regards the femora, I find that the teeth in the middle 

 femora are short and straight, more like serrations, and do not apparently 

 differ from those in Dythemis, but on the hind femora they are larger than 

 in Dythemis, with a distinct inclination towards the knee" [surely trochanter 

 instead of knee]. 



Brechmorhoga is, as stated by Mr. Kirby, closely related 

 to Macrothemis, agreeing therewith in the femoral charac- 

 ters above mentioned 2 (which are true for the male, not for 

 the female), but differing in the tarsal nail being toothed, not 



1 Ann. Mag. Nat. Hist., 6th Ser., Vol. XIV, 1894, p. 265. 



3 " Postero-inferior," lines five and six from the bottom, p. 531, Proc. Cal. Acad. Sci., 

 2d Ser., Vol. IV, should be "anteroinferior." 



