OF WASHINGTON. 65 



ticular food plant, but he reared Pteroptrix fiavimedia How., 

 Encarsia angelica How., and E. coquilletti How. from Aley- 

 rodes on different plants at about the same time and in the 

 same general locality, and there is nothing in his record to 

 negative the idea that E. californicus may be hyperparasitic. 



Eretmocerus haldemani, n. sp. (fig. 10). 



Female. Length, 0.64 mm.; expanse, 1.78 mm.; greatest width of 

 fore wing, 0.32 mm. Antennal club more than four times as long as 

 pedicel, not ellipsoidal as with 

 E. californicus, but approach- 

 ing the oar-shape figured by 

 Haldeman for E. corni and 

 lacking the longitudinal lines 

 found abundantly on the club 

 with E. californicus; antennae 

 as a whole about as long as 



entire body. Mesoscutum and 



FIG. 10. Eretmocerus haldemani: An- 

 mesoscutellum with a wide tenna of male above> of female below> 



delicate irregular subhexagonal 



sculpture, the scutum in addition being faintly granular. (In E. cali- 

 fornicus the surface of these sclerites is faintly aciculate.) General 

 color lemon-yellow, eyes reddish, ocelli crimson, legs pallid, flagellum 

 of antenna yellowish. 

 Male. Resembles female except for usual sexual differences. 



Type. No. 11708, U. S. National Museum. Described 

 from i male and I female reared by A. W. Morrill at Orlando, 

 Fla., from Aleyrodes coronata received from E. M. Ehrhorn, 

 Berkeley, Cal. From the same material were reared several 

 specimens of Prospalta aurantii How. and of a proctotrypid 

 which the writer determines with some hesitation as Amitus 

 aleurodinis Hald. So that here we have a situation almost 

 precisely similar to that described by Haldeman fifty-eight 

 years ago, and this species may very well prove to be a para- 

 site of the Amiius. 



On looking over some old material a slide was found carry- 

 ing several specimens of the male of what is apparently this 

 species, bred Aug. 27, 1895, from an Aleyrodes on cotton from 

 Harrisville, Miss., together with a female of Encarsia co- 

 quill etti How. 



