76 MAINE AGRICULTURAL ExPLRIMLNT STATION. I912. 



2. Dynaiosoma fulvida Coquillett. 

 Canad. Ent. XXVII. 201. 1895. 



Male. Length 4.5 mm. to 7 mm. Head dusky yellowish with 

 darker transverse fascia, or wholly brown, antennse siibfuscous, 

 4 or 5 basal joints and palpi yellowish. Thorax reddish yellow,- 

 hairs yellow, setae reddish yellow to brown. Abdomen reddish 

 yellow, the 3 posterior segments largely siibshining blackish 

 with yellow margins; hypopygium (Fig. 59). Coxje and legs 

 yellow, the tarsi and the tips of the hind femora brownish. 

 Wings grayish hyaline, marked with a large brown central spot, 

 a preapical fascia and a fainter grayish apical miargin (Fig. 

 184). Halteres yellow. Capens, Me. ( C.W.J. ), July; Friday 

 Harbor, Washington (J.M.A.), May; Ithaca, N. Y. 



Female. Similar to the male, but the abdomen with less dark 

 coloring, in 2 specimens wholly reddish yellow. Selkirk Mts. 

 (J.C.B.); Friday Harbor, Washington (J.M.A.), May; Ithaca, 

 N. Y., June. 



3. Dynatosoina thoracica Coquillett. 

 Proc. U. S. Nat. Mus. XXIII. 598. 1901. 

 Male and female. Length 4 to 5 mm. Head black, upper 

 part of face, base of antennae and the mouth parts yellow, 

 thorax and scutellum black, subopaque ; abdomen dark brown, 

 the first 4 segments partly or' wholly reddish yellow; legs -yel- 

 low, tarsi brownish, anterior tibiae each bearing about 4 down- 

 wardly directed spines at apex of outer side, the anterior 

 sp'ine the longest, nearly half as long as the tibial spur; many of 

 the lateral bristles of middle and hind tibia much longer than 

 greatest diameter of the tibiae, those on inner side of the middle 

 tibiae shorter than greatest diameter of the latter; wings grayish 

 hyaline, tinged with yellowish along the costa, cubitus forking 

 about opposite the crossvein. Halteres yellow. "111., N. H." 

 An examination of the type shows that there are 2 ranges of 

 set^ on each hind tibia. 



4. Dynatosoina placida n. sp. 

 Male. Length 5.5 mm. Head fulvous, frontal groove dusky, 

 ocelli 2, face and palpi pale yellow, antennae fuscous, 4 or 5 

 basal joints yellowish, setae on the upper eye margin, brown. 

 Thorax fulvous, mesonotum with 3 indistinct pale brown vittae, 

 setae pale brown ; pleura, scutellum, and metanotum yellow : 



