152 BLEPHABOCEBIDJE. 



the female feeds on the body -juices of small CHIBONOMID^E, which 

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

 a rule, but Bezzi records the opposite concerning a subalpine 

 Italian species, Hapalothrix lugubris, Lw. This species has been 

 observed to pair upon the surface of the water. 



The BLEPHABOCEEID^E may generally be distinguished without 

 much difficulty from all other families of NEMATOCEEA 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 Genera. 



The incomplete lower branch of the 4th 



longitudinal vein absent. 

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



'absent HAMMATORHINA, Loew, 



The 2nd vein present, 3rd absent APISTOMYIA, Big., p. 153. 



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



longitudinal vein present BLEPHAROCERA, Macq., 



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

 this appears to afford the only definite characters by which 

 he separates it. 



A. Labrum moderately short, with short 

 hairy labella. 



B. Eyes nearly contiguous in both 



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

 BB. Eyes in one or the other sex wide 

 apart ; upper facets uniform in 



size with the lower ones LIPONEUBA, Loew. 



AA. Labrum extremely long, with very 

 long labella, filiform, bare. 



C. Eyes divided by a broad front ; five 



longitudinal veins APISTOMYIA, Big. 



CC. Eyes nearly contiguous; four lon- 

 gitudinal veins HAMMATORHINA, Loew. 



Genus HAMMATORHINA. 



Hammatorhina, Loew, Bull. Soc. Ent. Ital. i. p. 94 (1 

 GENOTYPE, H. bella. 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 foella, Lw 



Hammatcrhina bella, Loew, 

 figs. 4-6(1869). 



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



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

 figs. 4-6(1869). 



