F. R. COLE 33 



the body, a weak yellow, the tarsi darker, more of a reddish color; of like color 

 are the halteres also. The wings are hyahne, the veins blackish bro\\Ti, the 

 costal border reddish to the tip; the squamae are tinged brownish yellow. 

 "Two, judging from the slender body, male specimens, from California." 



Osten Sacken collected this species in California and notes the 

 following: "Not uncommon on the sands about Lone ^Mountain, 

 San Francisco, according to Mr. H. Edwards. The three spec- 

 imens which I have are females. Two males from Mr. Edwards 

 are smaller (one only 10 mm.), the proboscis is shorter, although 

 still exceeding the abdomen in length; the coloring is bluish on the 

 thorax, purplish on the abdomen. Are they males of this species? 

 If they are, Dr. Gerstaecker was mistaken in describing his green 

 individuals with long proboscis as males." 



A. L. Melander gave some notes on two specimens of this 

 species/ both green females, measuring 8 and 10 mm. These 

 were taken in Marin County, California. In the specimens I 

 have studied the pile is more golden yellow and thicker, especially 

 on the thorax and abdomen, than in E. t7'istis. The legs of most 

 specimens are bright yellow, a black spot on the hind tibiae cover- 

 ing the spur. The halteres are yellow. The ocellar tubercle is 

 not so high as in other species of the genus. The first two joints 

 of the anteniiae are yellowish brown, and the proboscis is very 

 long. The second submarginal cell petiolate, the anal cell closed 

 in the margin. One specimen from Los Angeles, California, meas- 

 ures 11 mm., the proboscis, 16 mm. 



Two smaller specimens from Santa Monica, California (one of 

 which is shown in fig. 16), have very Httle bluish reflections and 

 the antennae are dark brown. Length, 8.5 mm.; proboscis, 9.5 

 mm. ; wing, 7 mm. The ocellar tubercle in these is very small and 

 rounded. One small specimen from North Monterey, California, 

 is dark and metallic blue, the tarsi dark brownish and the anten- 

 nae black. The base of the second submarginal cell is angular, 

 with a suggestion of a stump as in E. tristis. The ocellar tubercle 

 is high and bifid. A specimen from Stanford University, Cali- 

 fornia, has the thorax bluish green, the abdomen green, and the 

 tarsi darkened. The antennae are black, the third joint pointed 

 and slender. The ocellar tubercle is rather prominent. 



" Ent. News, xiii, p. 181, (1902). 



TRANS. AM. ENT. SOC, XLV. 



