444 Annals Entomological Society of America [Vol. XI, 



Ptychoptera japonica Alex. 



Mt. Takao, Musashi, May 15, 1913 (T. Miyake). 

 Kioto, April 12, 1914 (Nohira). 



Dicranomyia depauperata Alex. 



Kioto, April 18, 19i4 (Nohira). 



Male. — Length, 5 mm.; wing, G.G mm. 



Female. — Length, 6.2 mm. ; wing, 7.8 mm. 



Rostrum and palpi pale yellowish-brown. Antennae with the 

 scape yellow, the fiagellum pale yellowish-brown. Head yellow. 



Thorax dull yellow, with distinct greenish reflections, 

 especially on the dorso-pleural membrane and near the coxse. 

 Halteres with the stem greenish, the knobs darker. Legs pale 

 with the femora slightly greenish, the terminal tarsal segments 

 brown. Wings with the veins and membrane pale, subhyaline. 

 Venation: Sc short, ending before the origin of the arcuated 

 sector; cell 1st M^ closed; basal deflection of Cui at the fork 

 of M. 



Abdomen brownish-yellow, tinged with greenish, the apices 

 of the segments more yellowish. 



In life it is probable that the insect is quite greenish. 



Limnobia avis Alex. 



Takuhara, Province Shinano, September 4, 1915 (Nohira). 



Male. — Length, 12.5-15 mm.; wing, 13.5-18.5 mm. 



Rostrum and palpi dark brownish-black. Antennae pale 

 brownish-yellow. Head dark brown, the genae paler brown. 



Mesonotal praescutum obscure yellow, with three dark 

 brown stripes, the median one broadest, indistinctly bisected by 

 a reddish line; lateral stripes very short, not reaching the 

 suture; scutum dull yellow, the lobes brown; scutellum and 

 postnotum largely brown. Pleura dark brown and pale whitish- 

 yellow. Halteres pale. Legs with the fore coxee brown basally, 

 yellow apically; remaining coxae and the trochanters yellowish; 

 femora yellowish, the tips broadly brown ; tibiae brownish yel- 

 low, narrowly tipped with brown; tarsi light brown. Wings 

 yellowish, deepest on the costal region; veins and cross-veins 

 narrowly seamed with brown, especially at the origin of the 

 sector and along the cord; stigma largely pale. Venation: Rs 

 angulated or spurred at origin ; r at the tip Ri. Tip of the 

 wing obtuse. 



