I22 NEW YORK STATE MUSEUM 
four and five times their diameters, respectively; terminal ses 
ment, distal enlargement produced, tapering apically to a long, stow: 
spindle-shaped appendage. Palpi; the first segment long, irregula 
the second one-half longer, stout, subrectangular, the third one-fourt 
longer than the second, more slender, the fourth as long as the thirc 
somewhat dilated. Mesonotum dark brown, the submedian line 
indistinct. Scutellum reddish brown, postscutellum probably rec 
dish brown. Abdomen light yellowish and with a dark fuscou 
spot dorsally on the third and fourth abdominal segments. Genitali 
slightly fuscous. Wings long, slender: costa light brown; haltere 
pale yellowish. Legs a variable yellowish white: claws long, slende1 
strongly curved, the pulvilli as long as the claws. Genitalia; bas 
clasp segment very long, slender; an obtuse triangular basal process 
terminal clasp segment long, greatly swollen basally; dorsal plat 

Fig. 4o Thecodiplosis querci- 
folia, fifth antennal segment of male 
(enlarged, original) 
short, stout, deeply and roundly emarginate, the lobes rather broad] y 
rounded. 
This species, in the prolongation of the setae and circumfili on 
the ventral face of the antennae, suggests a relationship with Bremia. 
There is, however, no trace of a low basal circumfilum found in this 
genus and, moreover, the claws, so far as we are able to ascertain, 
are simple. The midge is remarkable for the greatly prolonged 
antennae, due largely to an extension of the stems separating the 
enlargements. The wings are unusually long and slender and the 
same is true of the basal clasp segment. Type Cecid. tor A 
