FUNGUS GNATS OF NORTH AMERICA. ■ 297 



low; hairs of thorax black; halteres and legs yellow, changing 

 into brown at apices of the tarsi; bristles of hind tibiae longer 

 than the greatest diameter of the tibiae; wings grayish hyaline, 

 the cubitus forks far proximad of the forking of the media; 

 anal vein reaching over 1-4 of its length beyond the forking of 

 the cubitus. "N. H." (Coq.). The type of vittata has more or 

 less yellow on the sides of the intermediate segments of the 

 abdomen. 



Female. A specimen from Friday Harbor, Wash. (Aldrich, 

 Col.) has the thorax largely yellow, the pleura and large oval 

 spots on the mesonotum above the base of the wings, brown. 

 The other parts as described for the male. Venation as figured 

 (Fig. 214). This may be a distinct species but until a male 

 from the same locality is found it better be left here. 



. 3a. Syii'temna vittata var. fasciata n. var. 

 Male. Differs from vittata in having abdomen yellow, the 

 whole of the first segment alid the basal 1-3 of 1-2 of each of 

 the following, dark brown; hypopygium (Fig. 106). Venation 

 similar to that shown in Fig. 214. Eastport, Maine. 



4. Syntemna separata n. sp. 



Male. Length 3.5 mm. Head black; face, palpi and 5 basal 

 joints of each antenna yellow ; antennae but little longer than 

 the head and thorax. Thorax yellow, the pleura largely and 2 

 oval spots on the mesonotum over the base of the wing, dark 

 brown, set^e black. Abdomen yellow, the whole of the first 

 segment and a large fascia like spot nearly covering the basal 

 half of each of the following segments, brown ; setae black, the 

 finer hairs pale. Legs yellow, tarsi darker, setse of the hind 

 tibiae longer than the diameter of the tibia, fore metatarsus 

 nearly 7-8 as long as the tibia. Wings hyaline, venation as 

 figured. (Fig. 215). Halteres yellow. St. Johnsbury, Vt., 

 June, ( C.W.J. ). ■ 



5. Syntemna polysona Loew. 

 Berlin. Ejit. Zeitschr. XHI. 142. 1869. 



Male. Length 3.8 mm. Head and its parts yellow, antennae 

 darker apically; ocellar spot black. Thorax and abdomen yel- 

 low, the segments of the latter posteriorly fasciate with black; 



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