TABLE FOR THE DETERMINATION OF THE GENERA. 13 



[ The face of both sexes very broad, not narrowed superiorly. 



Gen. XXIII. Thixophilus. 



29 ' 



] The face of both sexes rather narrow, somewhat narrowed superiorly. 



Gen. XXIV. Peodes. 



I Outer appendages of the hypopygiuru long, filiform. 

 Gen. XXV. NrcMATOPROCTr/s. 

 Outer appendages of the hypopygium not long, nor filiform. 31 



(Third joint of the male antennae conspicuously large. 

 Gen. XXVI. Leucostola. 

 Third joint of the male antennae small. 32 



oo i Pulvilli of the male fore tarsi conspicuously enlarged. 33 



' Pulvilli of the male fore tarsi not, or very slightly, enlarged. 34 



oo ( Pulvilli of the male fore tarsi not prolonged. Gen. XXVII. Eotarsus. 

 ' Pulvilli of the male fore tarsi prolonged. Gen. XXVIII. Diaphorcs. 

 „ . ( Arista altogether or almost altogether apical. 35 



( Arista dorsal. 36 



or ( Wings of considerable size (larger species). Gen. XXIX. Lyroneurus. 

 ( Wings of small size (smaller species). Gen. XXX. Chrysotds. 



(Feet of the male with isolated, strong, spine-like bristles. 

 Gen. XXXI. Teuchophorus. 

 Feet of the sexes without isolated, strong, spine-like bristles. 37 



n~ ( Face not narrowed above. Gen. XXXII. Sympycnus. 



( Face considerably narrowed above. Gen. XXXIII. Campsicnemus. 



{All femora slender, abdominal segments with bristles before the hind 

 margin. Gen. XXXV. Liancalus. 



Fore femora incrassated towards the basis. 39 



q ( Fore tibiae with long thorns. Gen. XXXVI. Scellus. 



I Fore tibiae with very short little thorns. Gen. XXXVII. Hydrophorus. 

 .„ ( Arista apical, or at least subapical. 41 



' ( Arista distinctly dorsal. 42 



{Third and fourth longitudinal veins strongly convergent. 

 Gen. XXXIX. Medeterus. 

 Third and fourth longitudinal veins parallel. Gen. XL. Chrysotimus. 

 , 9 ( Male abdomen with six distinct segments. Gen. XLI. Xanthochlorus. 

 I Male abdomen with five distinct segments. Gen. XLII. Saucropus. 



