OSTEN SACKEN ON WESTERN DIPTERA. 347 



and shining above, clothed with short, coarse, yellowish or reddish ( 9 ) 

 bristles; under side of the thorax pale yellowish; scutellum black, shining, 

 with four bristles ; metathorax black, shining; abdomen reddish; oviposi- 

 tor reddish, not longer than the last abdominal segment; feet reddish- 

 yellow. The cross-bands on the wings are somewhat like Monographs, 

 etc., vol. iii, tab. xi, fig. 17 or 18 ; first a short one, starting from the 

 humeral cross-vein ; next two bands forming an inverted Y, the angle 

 of which rests on the anterior margin, the two ends on the posterior one ; 

 finally, a band along the apical margin, coalescent at one end with 

 the angle of the Y, and ending on the other side in the second posterior 

 cell, close beyond the tip of the fourth vein. The color of these bands 

 is reddish-brown ; the ends of the Y and the posterior portion of the 

 apical band are darker brown. There is a small brownish cloud on the 

 posterior margin between the two branches of the Y, and a very nar- 

 row hyaline space between the apical band and the costal vein near 

 the tip of second longitudinal vein ; sometimes this space is reduced to 

 a small spot only (at any rate, this hyaline space is much smaller than 

 in the above-quoted figures). 



Hab. — Manlius, N. Y. (J. H. Comstock). 



Observation. — This species has all the characters of a true (Edaspis; 

 approximate cross-veins, the posterior one especially being very oblique ; 

 a black, shining scutellum ; a short ovipositor, etc. 



Trypeta (Eutreta) diana n. sp., $ 9 . — Black, shining; abdomen red, 

 except the tip, which is black ; wings broad, black, with whitish drops, 

 the apex margined with white. Length, S 5 mm ; 9 (with the ovipositor) 

 C-7 mm . Length of wing, $ 3 mm ; 9 4 mm . 



Front broad, reddish, with black bristles on the sides; the usual 

 bristles on the vertex likewise black ; but besides these there are nu- 

 merous stubble-shaped whitish {$) or whitish yellow (9) bristles on 

 the vertex and on the posterior orbit above. Antennae pale yellowish ; 

 arista, except at the basis, black. Face whitish-pollinose. Thorax black, 

 shining, clothed above with short whitish hairs, not dense enough to 

 interfere with the luster of the dorsum. Legs black, shining ; tarsi pale- 

 Abdomen blood-red. The two last segments in the male and the ovi- 

 positor in the female black. The penultimate segment in the male shows 

 a narrow, reddish, posterior border. The first joint of the ovipositor is 

 about equal to the two last segments taken together. The wings are 

 broad, rounded, black, covered with numerous white round dots, rather 

 uniformly spread over the disk of the wing, but not encroaching upon a 

 rather broad border, which is uniformly black. At and beyond the tip 

 of the sixth longitudinal vein, however, the white dots reach the margin 

 of the wing. The apex of the wing between the tip of the second vein 

 and the middle of the second posterior cell has a crescent- shaped white 

 border. The posterior cross- vein is very oblique and only gently curved. 



A male and a female specimen were bred by Mr. C. Y. Eiley from a 

 11 HB 



