104 NEW YORK STATE MUSEUM 



Adults bred from the pupae described above were preserved in 

 alcohol, and hence the color characters are somewhat doubtful. 



Female. Brownish, abdomen pale, legs brown and white, claws 

 simple, no pulvilli nor empodium ; fourth tarsal joint one-half as 

 long as the fifth, posterior tarsi ciliate with hair-like setae, last 

 joint with only a few hairs ; wings bare, without the crossvein-like 

 R2; length 3.5 mm. Head and mouth parts brownish; antennae 

 brown with white incisures; basal joint brown. Thorax brown 

 (perhaps cinereous in dried specimens) with indications of dorsal 

 stripes. Abdomen brown dorsally and white ventrally. Coxae 

 brown, fore and middle legs white, with brown knees and articu- 

 lations, hind legs brown, basal f of the femora, basal i of the 

 tibiae, and of metatarsi whitish. In some specimens the fore and 

 middle femora and tibiae have a brown ring near or beyond the 

 middle, and the posterior femora are wholly brown. Sometimes 

 the posterior tibiae also have a whitish ring near the tip and the 

 hind tarsi whitish. Halteres white with the tip of the knob some- 

 times darkened. 



Genus 7. Brachypogon Kieffer 

 Bui. Soc. Ent. Fr. 69. 1899 



Belongs to the group Oeratopogon distinguished by 

 having the wings bare, in having media coalesced with R4+5, the 

 branches of the radius coalescent, pulvilli absent. (P1.17, fig.13). 

 Type Oeratopogon vitiosus Winn. No North American 

 species have thus far been described. 



XYLOCRYPTA Kle£fer 



Genus Xylocrypta Kieffer. Bui. Soc. Ent. Fr. 69. 1899 

 From the other genera of the group Ceratopogon it is 

 distinguished in having the wings bare, the media simple, 

 and the tarsal claws with teeth. Type species Oeratopo- 

 gon fasciata Meigen. 



Xylocrypta Kieffer is made a synonym of P a 1 p o m y i a 

 Kieffer by its author (1902), The name may be retained for a 

 group, including species, having a wing of the type shown on 

 pl.17, fig.16, and having femora either with spines (genus 

 P a 1 p o m y i a) or without (genus e r a t o 1 o p h u s) . 



Genus 8. Ceratolophus Kieffer 

 Belongs to the group Ceratopogon. Wings bare ; media 

 simple, Ri and R3 connected by the crossvein-like R, (resembling 

 P a 1 ]) o m y i a pl.17, fig.16) ; femora unarmed. 



