CHARLES P. ALEXANDER 7 



HahitaL— J a\-)an. Holotype, 9 , Tokio, May 12, 1919, (R. 

 Takahashi). 



The collector states that this species is veiy rare. Libnotes 

 regina is a beautiful species, much larger than the brown L. un- 

 dulata ]\Iatsumura, but smaller than the even more elegant L. 

 regalis Edwards of Formosa. 



Tribe Antochini 



Genus RHAMPHIDIA Meigen 

 Rhamphidia obliterata new species 



Rostrum longer than the head; antennae of the male long, extending be- 

 yond the base of the abdomen; legs yellow, the tarsi darkened; wings with 

 the stigma dark brown, the wing-tip faintly darkened; basal deflection of 

 Ri+i very short or obliterated. 



Male. — Length, about 7 mm.; wing, 8 mm. 



Rostrum elongate much longer than the head, dark brown above, paler 

 beneath; palpi dark brown. Antennae of the male verj^ long for this genus 

 of flies, if bent backward extending beyond the base of the abdomen; an- 

 tennae dark brown, the first flagellar segment and the base of the second more 

 yellowish; second scapal segment pale brown; flagellar segments long-cylin- 

 drical, clothed with a conspicuous, erect white pubescence; verticils sub- 

 basal, inconspicuous, scarcely exceeding the pubescence. Head brown, the 

 vertex rather narrow. 



Pronotal scutum blackish, the scutellum yellow, duskj^ medially. Meso- 

 notal praescutum pale brown with three very indistinct darker brown stripes 

 that are entirely confluent behind; pseudosutural foveae shinj-, pale chestnut- 

 brown; scutal lobes brown, the median area yellow; scutellum and post- 

 notum dark plumbeous brown. Pleura yellowish brown. Halteres yellow- 

 ish, the Icnobs very indistinctly darker. Legs with the coxae brownish yel- 

 low; trochanters and femora yellow; tibiae brownish yellow; tarsi brown. 

 Wings w'ith a faint grayish tinge, the costal and subcostal cells more yellowish; 

 stigma long-oval, dark brown; wing-tip faintly darkened; very indistinct 

 darker clouds at the origin and tip of the sector; veins brown. Venation: 

 Rs moderately elongated, strongly angulated at origin; basal deflectioii of 

 RiJ^i \evy short or even entirely obliterated, in the latter case veins R-i+i 

 and i?4+5 appearing to arise directly from the end of the sector; vein i?2+3 

 almost straight, not bending strongly toward Ri as in most species of the 

 genus, at the wing-margin vein Ri+z being nearly equidistant from veins 

 Ri and i?4+5; cell 1st Mi long-rectangular; basal deflection of Cxi\ at about 

 one-third the length of cell 1st Mi- 



Abdomen dark browTi. Male hypopygium rather elongated for this genus, 

 the pleurites, especially, being lengthened; ninth tergite with the caudal 

 margin gently emarginate, the lateral angles slightly produced. 



TRANS. AM. ENT. SOC, XLVI. 



