258 Maine; agricuIvTuraiv e;xpi;rimi:nt station. 1909. 



two-thirds times the tibia in length. Wing yellowish with a 

 brown band near the tip; the coalesced part of the media and 

 its petiole subequal in length ; subcosta ends noticeably before 

 the base of the radial sector; R2+3 nearly perpendicular to 

 R4+5; the subcostal crossvein is placed slightly proximad of 

 the midpoint between humeral crossvein and apex of the sub- 

 costa ; anal vein not produced to the margin. Halteres yellow. 

 One specimen taken at Montreal in July. 



Var. sagax n. var. Male. Length 5 mm. Differs from the 

 female in having a paler abdomen, spot on wing less conspic- 

 uous and relatively longer legs. Antennae and front except 

 lateral margin, dark brown; occiput, face, palpi and scape of 

 the antennae yellow. Antennae short, the intermediate joints no 

 longer than wide, the hairs black. Mesonotum yellow with 

 four narrow brown stripes, scutellum, pleura and sternum 

 yellow, metanotum slightly infuscated ; setae of the mesonotum, 

 pleura and sternum yellow; metanotum slightly infuscated; 

 thoracic setae short, black, and not arranged in longitudinal 

 rows. Abdomen yellow, the base of the dorsum of the penulti- 

 mate and the whole of the ultimate segment brown; hypopy- 

 gium (fig. 102) mainly brown. Coxae and legs yellow; tarsi 

 apparently darker ; claws each with a slender basal tooth which 

 is over half as long as the claw; fore metatarsus is about one 

 and one-fifth, the second fore tarsal joint about 0.9 as long as the 

 tibia. Wings hyaline, yellow tinged, apex of R4+5 and costa 

 with a faint cloud; subcosta ends noticeably proximad of the 

 base of the radial sector; subcostal crossvein indistinct; 

 coalesced part of the media about equal to the petiole; R2+3 

 perpendicular to R^+s; anal vein does not appear to reach the 

 margin. Halteres yellow. Capens, Maine, taken in July, by 

 Mr. C. W. Johnson. 



This variety differs slightly from suhterminalis in the relative 

 length of metatarsi, petiole of media, and in form of hypopy- 

 gium. 



15. Platyura fasciventris Williston. 

 1896. fasciventris, Williston, Trans. Ent. Soc. London. 258. 



Female. Length 5 to 6 mm. Head and basal joints of the 

 antennae reddish-yellow, the distal joints of the antennae black 

 or brownish-black; the oval ocellar spot black. Front broad, 



