338 THE CANADIAN ENTOMOLOGIST. 



Abdomen, tergum dark brown ; sternum lighter brown, extreme 

 caudal margins of the sclerites light yellow. 



Holotype. — 9. Totonicipan, Guatemala, Cent. Am., 1902. (Dr. 

 G. Eisen.) 



Type in U. S. Nat. Mus. coll. (No. 15,132.) 



This insect agrees superficially with muscosa End.* of Ecuador, but 

 has Sc much longer, legs very different in colour, and is a much smaller 

 species. Muscosa has a supernumerary cross-vein in cell R3, but this may 

 not be normal, as it is not mentioned in the specific description. 



Fiirc07nyia eiseni, s p. n. 



Antennae black throughout ; body yellow ; legs, femora yellow^ 

 passing into brown on the tibiae and tarsi ; wings hyaline, with six brown 

 spots along costa, the second, largest, at origin of Rs. 



ê ' — Length, from 4.5-5 mm.; wing, 6.3-7.5 "^m. 



?. — Length, from 4.5-6 mm.; wing, 5.7-7 mm. 



Head : rostrum and palpi black. Antennae black throughout in the 

 S , with conspicuous long hairs, not so noticeable in the 9 . Front, 

 vertex and occiput blackish, grayish pollinose in front. 



Thorax : pronotum dull yellow ; mesonotum dull reddish yellow, 

 with a very indistinct darker median stripe and darker lateral stripes 

 which are brownish, these continued back on the scutum, where they 

 cover the lobes; scutellum and postnoium brownish. Pleui?e yellow, 

 with a more or less conspicuous dark brown stripe running from the cer- 

 vical sclerites to the postnotum. Haltères yellow at base ; apical half of 

 the stem and the knob brown. Legs : cox^e and trochanters light yellow ; 

 femora yellow at base, passing into brown ; tibiae and tarsi darker brown. 

 Wings hyaline ; cells C and Sc slightly yellowish ; six brown marks along 

 the costal margin on the cross-veins, as follows : A brown mark at ihe 

 wing base ; a large brown rectangular mark at the origin of Rs ; a third 

 at the tip of Sc, where it is continued down over the fork of Rs, here 

 meeting the fourth blotch, located at the tip of R^ ; the marks continuing 

 across the cord ; wing subapically largely dark; outer end of cell ist Mg 

 seamed with brown ; a brown mark in the end of cell 2nd Rj and cell R3; 

 ends of veins Cu^, Cug and ist A, with small brown clouds; a large spot 

 at end of 2nd A. Venation : (See fig. s.) Sc long, ending just before 

 the fork of Rs, Scg at its tip ; Ks square at its origin ; base of cell 1st Mg 

 arcuated, nearly on a level with the inner end of cell R3 (as in s^uUa O. S.); 



■^1912. Zool. Jahrbuch.; pt. r, pp. 75, 76; fig. W^ ( Dicranomyia.) 



