26o MAINE AGRICULTURAL EXPERIMENT STATION. I9II. 



tarsi subfuscous ; fore metatarsus about .9 as long as its tibia. 

 Wings grayish tinged, the heavier veins fuscous, the others 

 paler (Fig. 171). Halteres black, with yellow peduncle. "Md.," 

 and Ithaca, N. Y. 



Var a. In a specimen from Washington (J.AI.A.) the costa 

 is slightly less produced and the dorso-mesal process of the 

 lateral sclerite of the hypopygium acute at apex (Fig. 140 d). 

 In the eastern species this part (Fig. 141 d) is serrate. The 

 western specimen may represent a different species. 



3. Acnemia flaveola Coquillett. 

 Proc. U. S. Nat. Museum, XXIII, 598. 1901. 

 Female. Length 3 mm. Yellow, the antennse and tarsi becom- 

 ing brown toward their apices, segments 2 to 6 of abdomen 

 each with a median brown fascia, shortest on the second and 

 third; a brown dot on under side of each trochanter; fore 

 metatarsus less than 7-8 as long as its tibia; wings hyaline 

 (Fig. 172). "N. J.;" Mass., (C.W.J.) ; R. I., (J.B.) ; N. C, 



(C. U. Coll); Ithaca, N. Y. 



1 



4. Genus Asana Walker. 

 Insect. Brit. Diptera. III. 26. 1856. 

 Ocelli 3, high on the front, the laterals widely remote from 

 the eye margin. Legs stout, the femora compressed ;' fore tibiae 

 without, the middle and hind pairs each with 2 ranges of deli- 

 cate setse. Wings oval ; the costa produced beyond the tip of 

 the radial sector. Subcostal vein is shorter than the humeral 

 crossvein and ends free. Ri ends a little distad of the middle . 

 of the wing, the radial sector arises at about 1-3 the wing length 

 from the base ; the R-M crossvein is long, longitudinal in posi- 

 tion, forming apparently the beginning of the radial sector; 

 both media and cubitus are simple ; anal vein wanting. 



Asana sp. 

 I have seen a single defective specimen from Maine of a 

 member of this genus. 



5. Genus Rondaniella Johannsen. 

 Genera Insectorum, Fasc. 93. 66. 1909. 

 Leia (sensu Winnertz nee Rondani). Verb. Zool.-bot. Ges. 

 Wien. XIII. 792. 1863. 



