264 THE ENTOMOLOGIST. 



Philorites johannseni, n. g., n. sp. 



Length, without proboscis, about 4 mm. ; expanse about 9 mm. ; 

 head and thorax black ; legs brown ; wings ample, strongly fuliginous, 

 the basal third of the costal region pale ; proboscis stout, about 2 mm. 

 long ; palpi large, as usual, the apical portion slender, the tips falling 

 nearly 850 /x short of tip of proboscis (Ajnstomyia has a long pro- 

 boscis ; Paltostoma, which has an exceedingly long proboscis, has 

 rudimentary palpi) ; antennas filiform, apparently normal, not especi- 

 ally short (full length uncertain, but over 1360 yu) ; eyes appai'ently 

 prominent, but ill-preserved; a distinct dark V at base of hypo- 

 pharynx (compare Kellogg's figure of Bibiocejihala elegantula) ; thorax 

 arched ; abdomen short and broad (width about 1020 /x), approxi- 

 mately parallel-sided ; hind femora short, failing by more than 510 /x 

 to reach level of apex of abdomen ; tibiae and tarsi slender, fairly 

 long. 



Radius, except of course apically, distant from costa, leaving a 

 large costal cell, w4iich is about 238 fi deep (this is much more like 

 Bibioce2)hala than Pliilorus); vein R2 + 3 (following the nomenclature 

 used l)y Kellogg) very weak, arising from R4 + 5 (which is strong) 

 about 460 /x beyond origin of latter fromRj^, and branching about 

 646 ju, from its origin, the branches running approximately parallel, 

 to end about the apex of the wing, the branching being at least 

 2200 /x from the latter point; R4+5 ending (as in Bihiocc^ihala com- 

 stocki) below the apex of the wing ; radiomedial cross-nervure weak, 

 but apparently at right angles to radius and media, and about 780 /x 

 beyond mediocubital cross-nervure, and 1462 /x from margin of wing, 

 measuring along media ; cubitus with two branches, as usual, the 

 lower branch conspicuously bent at the cross-nervure ; anal weak, 

 only partly visible. The vein R 4 + 5 is not bent at the origin of 

 R2 + 3, or at the radiomedial cross-nervure. 



In the table of Blepharoceridae, Philorites will come in as 

 follows : — 



No incomplete branch of media . Ajnstomyia, Haminatorhina, 

 Paltostoma, Sackeniella, Curupira, and Plapalothrix. 

 With an incomplete branch of media . . 1. 



1. Radius ^ wholly fused with radius 3 Philorus and Blepharocera. 

 Radius ^ at least partly distinct ... 2. 



2. Proboscis shorter than palpi .... Bihiocephala. 

 Proboscis longer than palpi .... Philorites. 



In the venation, Philorites represents a more primitive con- 

 dition of the branches of the radius than is seen in Bibiocephala 

 grandis, the most primitive member (so far as the radius goes) 

 of the living American species. The arrangement is, in fact, 

 not very unlike that of Dixa and the Culicidte.* 



A few species of Blepharoceridfe exist to-day in the Rocky 



* It is of interest to note that the Blepharoceridie and Culicidie agree in 

 possessing the peculiar number of five (instead of four) Malpighian-tubes. 



