ZOOL.-VOL. III.] KELLOGG— NET-WINGED MIDGES. 199 



Liponeura include those forms without a distinct radius2 

 (anterior branch of second vein) but with a media-cubital 

 cross-vein (cross-vein connecting veins four and five). The 

 type species of Blepharocera will continue to be Blefharocera 

 fasciata, the common European Blepharocerid described 

 by Westwood in 1842; and to this genus will belong the 

 three American species, B. cafitata Loew, B. jordani 

 Kellogg, and B. osten-sackeni Kellogg, and the two European 

 species now called Li/poneura cinerascens Loew and 

 L. hrevirostris Loew. As L. cinerascens is the type species 

 of the go-vuis, Liponeura, a new generic name will have to be 

 given to those other species, bilohata Loew and yoseiuite 

 O.-S., which were included with L. cinerascens in the 

 genus Lifoneitra, but which cannot be transferred with 

 L. cinerascens to the genus Blefharocera. The name 

 Philorus (mountain-loving) is here suggested for these 

 forms. Included with bilohata and yosemite in this genus 

 Philortis would come Osten-Sacken's ^/^//^«roC(?r« ancilla. 

 By this arrangement von Roder's Agathon elegantulus 

 should be included in Bibiocephala. 



The following analytical tables will show the relation of 

 the genera under the present suggested revision: — 



Analytical Table of Genera of North American BLEPHAROCERiDyE. 



I. An incomplete medias lacking {=no incomplete vein near the posterior 

 margin of the wings). 



Apistomyia (Corsica, Cyprus), Hanimatorhina (Ceylon), Palto- 

 stoma (Columbia, Mexico, West Indies), Snowia (Rio Janeiro), 

 Oirnpira (Brazil), Hapolothrix (Monte Rosa, Europe). 

 II. Mediag present but incomplete (=an incomplete vein near the posterior 



margin of the wings). 



(North American and European species.) 



A. Radius.2 partly distinct (=second longitudinal vein with two 

 branches); a cross-vein between media and cubitus 

 ( x=cross-vein connecting veins four and five). 

 Radiusj , radiusj and radius^ all separating at a common point 

 or close together (=anterior branch of second vein, and 

 veins two and three all separating at a common point or 

 close together). 



Bibiocephala ( PI. XIX, figs. 4, 5, 6 and 7). 

 A. A. Radius2 wholly fused with radiusg (=second longitudinal vein 

 simple, without branches). 



