80 ENTOMOLOGICAL SOCIETY 



Enderlein a has made a new genus, Semidalis, for C. aleyrodi- 

 formis, but, as I have shown, Curtis's own figures show that 

 C. tineiformis has the same venation as C. aleyrodiformis; 

 therefore Semidalis is a synonym of Coniopteryx. Wesmael 

 described his species as Mcdacomyza lactea, and the genus is a 

 good one. Fitch based his genus Aleuronia on a precisely 

 similar form; therefore it is a synonym of Malacomyza. 



SYNOPSIS OF GENERA. 



1. Radial sector of fore wings simple ; median vein with two branches ; 



hind wings large and with two forks Aleuropteryx. 



Radial sector of fore wings forked; median vein with but one 

 branch 2 



2. In fore wings the cross-vein from cubitus runs into the lower branch 



of median vein (not into median itself) ; two forks in hind wings. 



Coniopteryx. 



In fore wings the cross-vein from cubitus runs into the median vein 

 before the fork 3 



3. Hind wings very small and narrow, only one-half the length of fore 



wings; in hind wings the radial sector is not forked nor does it 



reach the margin Conwentzla. 



Hind wings but little smaller than front pair ? 4 



4. In hind wings both the median vein and the radial sector are forked. 



Parasemidalis. 



Jn hind wings the radial sector is forked, but the median vein is 

 .simple Malacomyza. 



Genus CONIOPTERY^C Curtis. 



fConiopteryx Curtis, Brit Ent, xi, tab. 528, 1834. 



Coniortes Westwood, Introd. Mod. Class. Ins., n, p. 49, 1840. 



Semidalis Enderlein, Wien Ent. Zeit, 1905, p. 197. 



Head rather longer than broad, much smaller than the thorax ; second 

 joint of antennae without tooth below in male; tibia of middle and 

 hind legs slightly swollen in the middle. In the fore wings the radial 

 sector is forked once, and likewise the median vein; the cross-vein from 

 the cubitus connects to the lower branch of the median vein beyond 

 the fork. The hind wings are about two thirds the size of the fore 

 \wings, and are similarly veined, showing two forked veins. 



Type: C. tineiformis Curtis (fig. 9 of Curtis's plate). 



Coniopteryx vicina Hagen (PI. VI, fig. 5; PL VII, fig. 10). 



Head pale yellowish brown, vertex darker; antennae pale yellowish, 

 hairy, in female very slender, in male somewhat heavier, of about 

 thirty joints (I think there is some variation). Thorax dark brown. 



*Wien. Ent. Zeit, 1905, p. 197. 



