308 
J. R. MALLOCH. 
dorsal surface, one before and one beyond the middle. (As these bristles 
are rather hair-like, I assume they will be subject to variation both in num¬ 
ber and in position). Wing venation as figure 9. 
Length: 2 mm. 
One female, Takao, April 18, 1907. 
Rhicnoessa Loew. 
The three species represented amongst the material belonging to 
this genus have all been described by Prof. Hendel in a paper dealing 
with part of Sauter’s material which is deposited in another collection.. 
The following table will serve to identify the species. 
1. Cheek half as high as eye, or nearly so ; inner cross vein at very little before 
middle of discal cell; last section of fifth vein subequal with penultimate 
section of fourth ; wing veins heavy and dark, wing slightly grayish. 
ochracea Hendel. 
— Cheek very distinctly less than half as high as eye.2. 
2. Last section of fifth vein distinctly shorter than penultimate section of fourth ; 
inner cross vein at about one third from base of discal cell, sexseriata Hendel. 
— Last section of fifth vein distinctly longer than penultimate section of fourth ; 
inner cross vein at about two fifths from base of discal cell, fulva Hendel.- 
Rhicnoessa ochracea Hendel. 
Rhicnoessa ochracea Hendel, Suppl. Entomol. Nr. 2, 1912, p. 109 
Ten specimens from the following localities : Takao, January, March,. 
April, and May 1907 ; Anping, April, 1912. 
Rhicnoessa fulva Hendel. 
Rhicnoessa fulva Hendel, id., p. 110. 
Two specimens agreeing with the original description, Anping, Oc¬ 
tober and April. Two specimens from Anping, April, and two from 
Tainan, February and April, are considerably darker in color, especially 
on the dorsum of the abdomen, which is almost black, and in being 
distinctly more slender in build. I do not separate this form from fulva 
as I consider that color alone is not a reliable guide to specific identity, 
and other characters are not constant throughout the series. While this is 
noticeable particularly in the venation, the last section of the fifth vein is 
distinctly longer than the penultimate section of fourth in all the specimens,., 
which serves at once to distinguish the species from the following one. 
