454 ENTOMOLOGICAL NEWS. [May, 



2. Lestes uncatns Kirby. 



Laramie, July 19; Medicine Bow, July 20; Sheep Creek, 

 Albany Co., July 23 ; Little Medicine, Carbon Co., July 30. 

 Both sexes taken at all points where the species was observed. 



3. Amphiagrion saucium Burm. 



Sheep Creek, Albany Co., July 23, taken along a small trib- 

 utary, 3 $ i 9 . Laramie, July 19, two . Abdomen $ 19, 

 9 19-21 ; hindwing 15, 9 15-18 mm. 



These Wyoming specimens have certain differences from the 

 typical form robustness, darker colors and villose thorax 

 which are more marked than in any other individuals exam- 

 ined, even from Montana and Washington. The form of the 

 male appendages will not serve to separate them ; a female 

 from Washington is indistinguishable from a Wyoming speci- 

 men. Judging from my material the variation seems to run 

 from the typical Eastern saucium to specimens from Washing- 

 ton, then Montana, and finally the Wyoming forms. These 

 last agree so w 7 ell with Pyrrhosoma abbreviatum Selys, that 

 his name must be considered a synonym of saucium* 



4 Enallagma annexum Hagen. (PI. IX, figs. 3, 7). 



Medicine Bow, July 20 ; Sheep Creek, Albany Co., July 23 

 and August 6. 



When these notes were prepared I had not separated this 

 species from the next, including both under the name culvert i. 

 I have since been able to distinguish the two by the aid of a 

 drawing of the abdominal appendages of the male in profile of 

 each species, which Dr. Calvert sent me, together with a speci- 

 men of each species, aniic.i'iiin from Seattle, Washington, June 

 14, 1894, an d calrcrti from Olympia, Washington, July 9, 1893. 

 When sending this material Dr. Calvert raised the question of 

 the distinctness of annc.\nm and calvcrti. So far as the Wyom- 

 ing material goes there seem to be no intermediate forms. A 

 single male of annexum from Pasadena, California, July 7, 

 1899, does not differ from Wyoming specimens of the same 

 species. Between the two species no color differences are 



* I have studied some of these Wyoming specimens, as well as those from Montana, 

 Washington, and also Colorado, and hold the same opinion as to the specific identity of 

 abbreviatum and saucium. P. P. Calvert. 



