CHARLES P. ALEXANDER 13 



A male from Saitama, May 29, 1919, collected by Mr. Taka- 

 hashi, appears to be a variety of this species. It is equal in size 

 to the larger specimens whose measurements are given above, 

 differing in the darker, more reddish color, the broader wings 

 with the cells, especially cell Isi M2, correspondingly widened 

 and with the cord distinctly seamed with darker. This form 

 may be known as Limnophila flavella saitamae new subspecies. 



Limnophila flavella, L. pih'fer Alexander and L. punctum (Mei- 

 gen) of Europe form a group of closely related species, which 

 are distinguished from the typical American species of Lasiomastix 

 by the short antennre in the male sex. 



Limnophila (Eulimnophila) tokionis new species 



Antennae of the male sex elongated; general coloration shiny reddish 

 brown, the thoracic pleura reddish yellow; wings brownish gray, the stigma 

 indistinct; cell Mi present. 



Male. — Length, 6.5-7 mm.; wing, 7.8-8.7 mm. 



Female. — Length, 11-1L8 mm.; wing, 9.8-10.8 mm. 



Rostrum reddish brown; palpi dark brown. Antennae dark brown; in 

 the male sex elongated, more than one-half the length of the botly, the flagellar 

 segments clothed with a long, erect pubescence. Head dark brown, with a 

 sparse plumbeous bloom. 



Pronotum reddish, the scutinn dark brown medially. Mesonotal prae- 

 scutum reddish, the disk more brownish, highly polished; scutum with the 

 lobes reddish brown, the median area more yellowish; scutellum and base of 

 the postnotum lead-color. Pleura reddish yellow. Halteres dull yellow, 

 the knobs darker, brown. Legs with the coxae shiny yellow; trochanters dull 

 yellow; remainder of the legs dark brown, only the femoral bases brighter. 

 Wings brownish gray, the stigma very indistinct, of a slightly darker brown 

 than the remainder of the wings; veins dark brown. Venation: Sci long, 

 at the tip of Sci, r far from the tip of Ri and connecting with R^ near its origin; 

 cell Ml present. 



Abdominal tergites dark brown, the mid-dorsal region even darker; ster- 

 nites yellowish with an interrupted dark longitudinal stripe, whic'i is some- 

 times obsolete, especially in the females. Male hypopygium with the outer 

 pleural appendage subchitinized, terminating in a long, curved hook, im- 

 mediately beneath which are a number of minute denticles; inner pleural 

 appendage fleshy, tapering gradually to the blunt apex which is tipped with 

 a single powerful bristle. 



Habitat— i^lian. Holotype, c?, Tokio, April 28, 1919, (R. 

 Takahashi). Allotopotype, 9 , May 27, 1919. Paratopotypes, 

 3 c^, 2 9 , April 24 to May 15, 1919. 



TRANS. AM. ENT. SOC, XLVI. 



