100 MAINE AGRICULTURAI, EXPERIMENT STATION. I912. 



yellow, tips of hind femora and of hind tibiae blackish, spot on 

 under side of hind femora near base, and tarsi brownish; fore 

 metatarsus nearly .75 as long as its tibia ; middle tibiae each with 

 3, rarely 2, setae on flexor surface, hind tibiae each with 2 

 ranges of setae on extensor surface ; hind metatarsus nearly .8 

 as long as the remaining joints taken together. Wings grayish 

 hyaline with central spot and preapical fascia which reaches 

 hind margin, narrowest on cell Mi (Fig. 201). Halteres ye-- 

 low. Ithaca, N. Y. ! and Orono, Me. Nov. 



27. Mycetophila perlonga n. sp. 

 Male. Length 5.5 mm. Head dusky reddish yellow, front 

 and antennae dark brown, scape and palpi yellow. Thoray 

 dusky reddish yellow, mesonotum with 2 wide dark brown 

 stripes ; pleura and metanotum dark brown. Abdomen dark 

 brown, paler at the incisures; hypopygium (Fig. 83). Cox;^' 

 and legs yellow, tips of hind femora black; fore metatarsus 

 about 7-8 as long as the tibia; middle tibiae each with 3 or 4 

 setae on flexor surface; hind tibia each with 2 ranges of setae 

 on the extensor surface. Wing yellowish gray hyaline, costal 

 cell more yellow, central spot and large preapical fascia dark 

 brown, posterior apical margin tinged with brown (Fig. 202). 

 Halteres yellow. N. Y. August. 



28. Mycetophila polita Loew. 



Berlin. Ent. Zeitschr. XHI. 158. 1869. 



^Male. Length 2.5 mm. Head black, face and mouth parts 

 luteous ; antennae fuscous black, scape and base of flagellum 

 yellowish. Thorax shining black, humeri and the tips of the 

 posterior lateral angles of the mesonotum luteous. Abdomen 

 shining black, segments 5 and 6 each with yellow basal fasciae, 

 hypopygium luteous, minute. Coxae and legs pale yellow, ex- 

 tensor surface and tip of each hind femur black; middle tibia: 

 each with 3 setae on flexor surface. Wing with small central 

 spot and a preapical fascia which arises on the costa before 

 the ti|) of Ri and reaches Mi; directly opposite this the veins 

 Ml and M2 are gray clouded. "N. Y." There are 2 ranges of 

 setae on the extensor surface of each hind tibia in the type 

 specimen. 



A female specimen from Ithara, N. Y., does not differ. The 

 humeri are widelv yellow. 



