DOLiciiorus. 25 



male sex only. The sj'stematic arrangement which follows the 

 dichotomic table subdivides the genus in groups, founded upon 

 easily perceptible characters common to both sexes. I think it 

 will be useful to retain these groups, or, at least, the principal 

 among them. 



Table for determining the Species. 



. ( Prevailing color of the feet black. 2 



( Prevailing color of the feet yellowish. 9 



( Cilia of the inferior orbit black. 3 



' Cilia of the inferior orbit whitish. 4 



o f Face ochre yellowish. 1 gratus Lie. 



\ Face silvery white. 2 laticornis Lw. 



.( First joint of hind tarsi with numerous bristles. 3 setifer Lw. 



X First joint of hind tarsi with but few bristles. 5 



, ( Hind tibiae black only at the tip. 6 



I Hind tibia? quite black. 7 



f The black at the tip of the hind tibia? rather extended and not very 

 , ] sharply limited. 4 albiciliatus Lw. 



i The black at the tip of the hind tibia? but little extended and sharply 



[ limited. 5 xanthocnemus, n. sp. 



_ ( A considerable extent of the tip of the femora yellow. (i tetricus, n. sp. 



( The extreme tip of the femora only somewhat yellow. 8 



o ( Lamella? of the hypopygium pointed. 7 acuminatus Lw. 



X Lamella? of the hypopygium rounded ovate. S ovatus Lw. 



q ( Cilia of the inferior orbit black. 10 



I Cilia of the inferior orbit pale. 11 



in ( Fore coxa? blackish. 9 pachyenemus Lw. 



Fore coxa? yellow. 10 brevipennis Mt ig. 



, . ( Tegula? with pale cilia. 12 



(. Tegula? with black cilia. 23 



19 f Antenna? black, at the utmost, the first joint almost red. 13 



I Antenna? altogether, or at least their larger portion, yellowish red. 21 

 1Q f Fore coxa? dark beyond the middle. 11 longimanus I.tr. 



I Fore coxa? pale. 14 



, . f Tip of the hind tibia? decidedly blackish. IT) 



t Tip of the hind tibia' not or very slightly infuscated. 16 



,r f Fore tarsi only ferruginous-brownish. 12 brevimanus Lw. 



\ Fore tarsi blackened from the tip of trie first joint. 13 socius /.»•. 

 , fi f Hind tarsi entirely black. 17 



1 Basis of the hind tarsi pale to a considerable extent. 19 



, - f Hind femora of the male not ciliated. 14 nudus, n. sp. 



I Hind femora of the male ciliated. 18 



