152 BLEPHAROCERID.T. 



the female feeds on tlie body-juices of small CHinoNOMiDyi;, which 

 are caught ou tlie wing. The male seems rarer than the female as 

 a rule, but Bezzi records the opposite concerning a subalpine 

 Italian species, Hapaloihriv Iwjubris, Lw. This species has been 

 observed to pair upon the surface of the water. 



The Blephakocekid.e may generallj'' be distinguished without 

 much difficidty from all other famihes of Nematocera either by the 

 so-called secondary venation or the lateral bisection of the eyes. 



Only nine genera are known, representing nineteen species, 

 including my two new ones, and of these three genera are found in 

 India or Ceylon. They may be thus distinguished : — 



Table of (renera. 



The incomplete lower branch of the 4th 

 longitudiual vein absent. 

 The 2nd and 3rd longitudinal veins [p. 152. 



absent IIammatorhina, Loew, 



The 2nd vein present, .Jird absent Apisxomyia, Big., p. 153. 



The incomplete lower branch of the 4th [p. 155. 



longitudinal vein present Blepharocera, Macq., 



Hammutorldna is placed by Loew in a table as follows, and 

 this appears to afford the only definite characters by which 

 he separates it. 



A. Labriim moderately short, with short 

 hairy labella. 



B, Eyes nearly contiguous in both 



sexes, the upper facets very large. Blepharocera, Macq. 

 BB. Eyes in one or the other sex wide 

 apart ; upper facets uniform in 



size with the lower ones Liponeura, Loew. 



AA. Labrum extremely long, witli very 

 long labella, tiliform, bare. 



C. Eyes divided by a broad front ; five 



longitudinal veins Apisxomyia, Big. 



CC. Eyes nearly contiguous; four lon- 

 gitudinal veins IIammatorhina, Loew. 



Genus HAMMATORHINA. 



Hammatorhina, Loew, Bull. See. Ent. Ital. i. p. 94 (1869). 



Genotype, H. hella, Lw., the original and only species. 



I am unacquainted with this genus, and append a translation of 

 Loew's description of his species. 



114. Hammatorhina bella, Liv. 



Hammatcrhina bella, Loew, Bull. Soc. Ent. Ital. i, p. 96, pi. ii, 

 figs. 4-6 (1869). 



*' Velvet-black, thorax and abdomen with silvery spots ; length 



