355 



It is easily distinguished from any described species in this genus 

 by its extremely pale color, and by the conspicuously spinose black 

 fifth tarsal joint of all the legs. 



4. ProbEzzia glabdr Coquillett 



Ceratopogon gldber Coquillett, Proc. U. S. Nat. Mus., Vol. 25, 1902, p. 85. 

 Proleszia glaher (Coquillett) Malloch, Proc. Biol. Soc. Wash., Vol. 27, p. 137. 



This species was described by Coquillett from a female specimen 

 from Florida, and that sex only is represented in the collection before 

 me. The legs are pale yellow, all coxae, trochanters, a narrow spot 

 beyond middle on anterior side of fore femora, a narrow median band 

 on fore tibiae, and the narrow apices of all tibiae and of the tarsal 

 joints black. Tarsal claws of fore and mid legs of moderate size, 

 those of hind pair almost as long as fifth joint, subequal. Wing as in 

 Figure 9, Plate XXII. 



Illinois localities : Havana, Peoria, and Urbana. April 30 to July 

 7. Collected by C. A. Hart and the writer. 



5. Probezzia pachymera Williston 



Ceratopogon pachymerus Williston, Biol. Cent. Amer., Supp., p. 224. 

 Proheszia pachymera (Williston) Malloch, Proc. Biol. Soc. Wash., Vol. 27, 1914, 

 p. 137. 



Described from Vera Cruz, Mexico. 



6. Probezzia obscura, n. sp. 



Female. — Brown, slightly shining. Antennae pale brown. Mesono- 

 tum slightly pruinescent on lateral margins and at the limit of its an- 

 terior third, on each side; scutellum brownish yellow. Abdomen 

 brown, yellowish on basal half of dorsum. Legs yellow, hind femora 

 gradually becoming blackened from middle to apex; apices of tibiae 

 narrowly blackened ; apices of tarsi brown. Halteres brown. Wings 

 clear, veins yellow. 



Eyes separated by about one fifth the head-width; second joint 

 of flagellum of antenna slightly more than twice as long as broad. 

 (Antennae broken.) Disc of mesonotum covered with very closely 

 placed, short and rather stout, blackish hairs; the group of bristles in 

 front of wing-base numbers 6-7 ; scutellum bristles strong but not 

 numerous. Abdomen slender, slightly broadest at second segment. 

 Legs stronger than in fidvithorax ; basal joint of hind tarsus nearly 

 as long as the remaining joints combined; fifth joint without ven- 



