254 ENTOMOLOGICAL NEWS. [June, 'l/ 



Legs light yellow or light yellowish brown; external posterior sur- 

 face of femora black, apex black or brown. 



Wings clear to slightly brownish-tinged; stigma brown to reddish 

 brown, encircled with pale within the enclosing veins, covering one 

 cell or very slightly less, very slightly oblique, a brace vein present, 

 the costal and posterior sides distinctly longer than the proximal and 

 distal sides. 



$ . — Similar to the male throughout except as noted, as brightly 

 colored, at least in dried material; abdominal segments 7-10, seen 

 from above, black, 10 with apex more or less red ; seen from the sides 

 7-9 are pale below like the preceding segments, and 10 is largely pale 

 with traces of red apically. Vulvar spine wanting. 



British Guiana: Rockstone, February 12 and 14, 1912, 5 $ , 

 2 $ ; Tumatnmari. Februarys 29, 191 2, A. F. Porter, i $ . 



Three of the males taken at Rockstone were collected by my 

 father and I know nothing of the circumstances as I was at 

 Tumatumari at the time. But on February 14 we went to- 

 gether in the afternoon to the large island in the Essequibo op- 

 posite Rockstone. At this time the country was experiencing 

 an unusual drought, the river was at a lower stage than many 

 persons had ever before seen it, and we found the pools on 

 the island dried up and dragonflies scarce. The four speci- 

 mens of flauuncum taken were foimd singly in the woods, in 

 bushes or small trees, resting on the leaves at a height of 6 

 to 8 feet. . 



When the above description was prepared and when the 

 manuscript of this paper was sent to Doctor Calvert, I re- 

 garded flainmcnm as not congeneric with the species grouped 

 under Acolagrion. Doctor Calvert wrote me that he regarded 

 my distinctions as very fine splitting ; and later, in answer to 

 my enquiry. Mr. Kennedy wrote me : "The penes of flammeum 

 and dor sale are more alike than any other two species in the 

 genus. There are slight differences but these are not generic 

 unless there are good parallel characters in venation or else- 

 where." I therefore follow the judgment of these two students 

 in this paper. The key in this paper indicates the characters 

 upon which I was basing my opinion on the generic distinct- 

 ness of flammeum. 



