36-4 THE CANADIAN ENTOMOLOGIST. 



gray po.liiiose. Halleres short, stem dull yellow, knob brown. Legs : 

 oixse and trochanters da;l yellow ; femora similar, rather darkened toward 

 the tip ; tibiae and tarsi lig'it brown. Wings hyaline, veins dark brown, 

 conspicuous; stigma indistinct, brownish. Venation (see fig. k.) : Sc 

 cnd.s opposite the origin of Rs ; Sc^ far retracted so that Sc, is almoU as 

 loi\g as the stigma ; Rs only a little longer than the deflection of R1.5; 

 basal deflection of Cu, at the fork of M. 



Abdomen: tergum dull brown ; sternum yellowish brown. 



Holotype. — ?. Neuquen, Argentina, 1907. (Dr. .Adolf Lenol.) 



Type in authoi's collection. 



Differs from the hitherto described species by the characters givei in . 

 under insignifica. From iiisignifica it differs in its wing venation, colour 

 of veins, and body tone. 

 ? Fiircomyia fumosa, sp. n. 



Wings infumed, with darker clouds. 



9. — Length about 5.-; ram ; wing, 6.3 mm. 



5 . — Head : rostrum and palpi dark brown. Antenna dark brownish 

 black. Front, vertex and occiput brownish, with a grayish pubescence. 



Thorax : pronotum dark brown. Mesonotum light brown, the 

 postnotum darker. Pleurae dark brown. Halteres dark brown, base of 

 the stem light coloured. Legs : coxre and troclianters dark brown, rest 

 of legs broken. Wings infumed with brown, darker brown clouds arranged 

 as follows : At origin of Rs, at tip of Sc, at tip of R„ along cord ; most 

 of veins and tip of wing clouded with dark brown. Venation (.■•ee fig. 

 t.) : Sc long, Sci ending slightly before the fork of Rs, Sc.^ at its tip ; R, 

 bends down near its end and touches R.,.3, obliterating the cross-vein r ; 

 basal deflection of Cu, beyond the fork of M. 



Holotype. — ?. Amatuk, British Guiana; July 14, 191 1. (F. E. 

 Lutz.) 



Type in American Museum of Natural History. 



This insect is closely allied to Limnobia insular is Will. (Dipt. St. 

 Vincent, Trans. Ent. Soc. Lond , 1896, p. 2S7, pi. 10, fig. 58), but the 

 wing has quite a different pattern, cell 1st M.^ less elongated, basal deflec- 

 tion of CU| farther distad, etc The two s|)ecies are certainly as close to 

 Furcomyia as they are to Limiiobii, but seem to represent a peculiar 

 group which needs further study with more material. 



Mr. Edw.\rd p. Van Di zke, of Buffalo, leaves early in December for 

 a four months' vacation in California. His temporary address will be 

 San Diego, Calif. 



