Zool.-Vol. I.] CALVERT— ODONATA. 383 



Female differs from the male in that the violaceous color is replaced by a 

 pale cream color which in various individuals is faintly tinged with green or 

 violaceous. Dark markings as in the male, but more limited in extent, the 

 area between the ocelli and the rear of the head being chiefly pale colored, the 

 humeral stripe cleft in its upper half, a short black line at the upper end of 

 the first lateral thoracic suture, a pale mid-dorsal line on 3 and 4, 8-10, which 

 are perhaps pale blue in life, have no dark markings in the young; one female 

 has the two dark longitudinal bands on 2 united in front of the apex of the 

 segment. Abdominal segment 10 with a deep, narrow, apical, dorsal cleft 

 reaching almost to base. Appendages and valvules pale, the former shorter 

 than 10. Legs pale, two superior dark stripes on the femora, first tibiae with 

 an anterior stripe and most of the tarsi dark. Wings more yellowish than in 

 the male, often brownish. 



Dimensions: Total length, S 30-33 mm., 9 32.5-35 mm.; abdomen, S 

 24.5-27 mm., ? 26-28 mm.; hind wing, S 18-19 mm., 9 19-21 mm. 



363 19? Tepic, Oct., 1894, Eisen and Vaslit. 

 73 4? " Nov., 1894, " 



2 ? No date or locality. 



43 3 25? 



This species has hitherto only been recorded from 

 Venezuela. 



9. Erythragrion salvum Hagen. 



Agrion salvum Hagen, Syn. Neur. N. Am., 1861, p. 85; Calvert, Proc. Cal. 

 Acad. Sci., 2d Sen, Vol. IV, 1893-94, p. 483, PI. XV, fig. 9. 



7 <5 3 ? Tepic, Oct., 1894, Eisen and Vaslit. 

 1 6 " Nov., 1894, " 



80 3? 



On pp. 484, 485, 1. c, I called attention to the individual 

 variations in this species being so numerous as to bring into 

 question the generic differences between Erythragrion and 

 Pyrrhosoma. I may here say that the armature of the giz- 

 zard of salvum differs from that of P. minium and, to a 

 less extent, from that of P. tenellum as figured by Ris, and 

 is described and figured in Part III of this paper. 



