FUNGUS GNATS OF NORTH AMERICA. Si 



ff. With diffuse apical wing clond ; hypopygium (Fig. 

 65). 6. recta n. sp. 



ee. Dark brown or blackish species; hypopygium (Fig. 66). 

 f. W'iug with hyaline spot under Rs (Fig. 191). 



7. fencstrata. 



ff. Vv'irg not marked thus. 7a. var. praemibila n. vaf-. 



cc. Preapical wing cloud sharply defined with an anterior spur 



which fills out the apex of cell Ri ; middle tibia? each with 



2 or 3 setre on flexor surface. 8. iiiipcllans n. sp. 



I. Mycothcra aiialis Coquillett. 



Proc. U. S. Nat. ^lus. XXIII. 598, 1901. {Bxcchia). 

 Male. Length 2 mm. Head black, thd face, mouth parts 

 and base of antennse yellow; thorax black slightly polished, a 

 small triangular yellow spot below the humeri ; abdomen dark 

 brown, the third and fourth segments, except hind margin of 

 the latter, yellow ; legs yellow, the broad apices of hind femora 

 (lark brown, tarsi brownish yellow; wings hyaline, a brown 

 facia fills the apex of cell Ri and crosses cell Rs. "Delaware 

 \\'ater Gap, N'. J." 



2. Mycothcra paula Loew. 



Berlin. Ent. Zeitschr. XIII. 151, 1869. 

 frifasciafa Coq. Invert. Pacifica I. 18. 1904. (Mycctophila). 



Male and female. Length 2.2-2.5 mm. Head fuscous, an- 

 tennae brown, the 3 or 4 basal joints and the palpi yellow. 

 Mesonotum reddish brown, opaque, the front and lateral mar- 

 gins and front angles yellow; hairs yellow, setae brown; scutel- 

 lum yellow, pleura and metanotum brown. Abdomen black, 

 genitalia (Fig. 62) yellow. Legs yellow, tips of hind femora, 

 of middle and hind tibiae, and the larger part of the tarsi, 

 brown : middle tibiaj each with 2 set?e on flexor surface. Wing 

 grayish hyaline with 3 brown fascitie (Fig. 187). Halteres yel- 

 low. 



I have seen the types of paula and trifasciata, and they dn 

 not a])pear to cliiTer. "Middle States," "Stanford Univ., Cal. ;" 

 Carbondale Landing, Columbia River, B. C, (T.C.B.") ; Ithac-i, 

 X. Y.. Aug., Oct.: Brookside, N. J. (Weidt).' 



