﻿6 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 59 



length of last section of second vein, fourth vein from inner to outer 

 cross-vein as long as basal portion of third, outer cross-vein dis- 

 tinctly but not greatly longer than inner, third vein distinctly and 

 regularly upward bent on last section, finishing much in front of 

 wing tip, costa not carried beyond end of third vein, fourth vein 

 traceable to margin of wing, almost straight, fifth vein not distinct 

 beyond outer cross-vein, one very long bristle at near base of costa 

 and a double series of shorter, but widely placed bristles from be- 

 yond it to end of first vein; halteres pale yellow. Length 1.25 to 2 

 mm. 



Locality. — Tabernilla, Canal Zone, Panama, Jan.-Feb., 191 1 

 (August Busck). Eleven males. 



Type.— Cat. No. 14942, U. S. Nat. Mus. 



Closely allied to the species mentioned hereafter that was de- 

 scribed by Williston as scutellaris, but the legs in that species are 

 not entirely yellow, and the venation is different from fulva. 



LIMOSINA FUSCINERVIS, new species 



Female. — Black, subshining; frons black, about one and one-half 

 times as broad as long, raised towards center and anterior outline 

 centrally produced, bristles strong, lower lateral bristle projecting 

 over eye, second projecting backward and outward, third incurved, 

 ocellar bristles divergent, central rows of five each, the lower and 

 upper bristles much the weakest, face gray-dusted, much produced 

 in center, upper mouth edge not much produced, the face in profile 

 slightly concave, cheeks brown, the anterior bristle strong, two 

 moderately long bristles posterior to it, the second rather high on 

 cheek, the usual shorter posterior bristles long and hair-like, antennae 

 brownish yellow, internal apical and dorsal bristles on second joint 

 strong, third joint not much larger than basal, thickly covered with 

 whitish pubescence, arista brown, about one and one-half times as 

 long as breadth of frons, distinctly pubescent; mesonotum sub- 

 shining, the short hairs very distinct and all bristles strong, post- 

 humeral bristles incurved backwardly, three pairs of dorso-central 

 macrochsetse, the anterior pair much wider placed than posterior but 

 not weaker, between the anterior pair there is in the type a central 

 bristle, pleurae brownish, sutures paler, pleural bristle strong, a 

 smaller one anterior to it, scutellum with two posterior and two sub- 

 basal long marginal bristles, and two basal and two sub-apical 

 weaker bristles ; abdomen opaque black, bristles weak ; legs yellow, 

 mid legs with bristles as in M-nigrum } hind femora with three to 



