24 KANSAS UNIVERSITY SCIENCE BULLETIN, 



Syntemna mutor, n. sp. 



Male : Black, subshining ; head black, base of third anten- 

 nal joint and apex of palpi, brownish yellow, antennae sericeous, 

 front with a few yellowish hairs; mesonotum black, subshin- 

 ing, covered with thin, grayish pollen and yellow pile, a few 

 black bristles on lateral margins near base of wings, scutellum 

 black, bristles concolorous, pleurae black, bearing sparse yellow 

 pile above front coxae, metanotum black, hal teres yellowish; 

 abdomen in the majority of specimens fulvous except the last 

 segment and hypopygium, which are black, in other specimens 

 the abdomen is largely black, and in one specimen, it is en- 

 tirely so, pile in all specimens yellow ; legs yellow, middle tibiae 

 on posterior side and tarsi, except base of metatarsi, brown ; 

 wings grayish hyaline, tip with a slight blackish tinge, anterior 

 veins dark brown, others lighter, auxiliary vein joins first 

 nearly opposite the base of the fourth, furcation of the fourth 

 and fifth veins opposite the junction of third and small cross- 

 vein. 



Female : Agrees with the male, except that the pile of the 

 thorax is almost wholly black, the abdomen is more uniformly 

 fulvous, and the furcation of the fourth vein is a little more 

 proximad than that of the fifth. Length, 3.5 mm. 



Many specimens of both sexes ; Atherton, Mo. Collected by 

 the writer, during April and May, 1899, 1900, 1901. 



Boletina abdominalis, n. sp. 



Male : Black, subshining ; head and members black, except 

 first antennal joint, which is tinged with yellow, middle ocellus 

 very small ; mesonotum black, subshining, covered with yellow 

 pile, which are inclined to arrange themselves into rows, scutel- 

 lum black, pile yellow, pleurae black, without pile, metanotum 

 black, halteres black ; abdomen wholly black, subopaque, hyp- 

 opygium with a yellowish tinge, pile yellow; legs yellowish, 

 trochanters and tarsi, except base, largely fuscous ; wings 

 grayish hyaline, veins fuscous, auxiliary vein joins costa op- 

 posite base of third, auxiliary cross-vein slightly before junction 

 of small cross-vein and the fourth, furcation of fifth vein is just 

 distad to the same, and the furcation of the fourth is distad to 

 the junction of the small cross-vein and the third. Length, 3.5 

 mm. 



Atherton, Mo. Collected by the writer, April 13, 1900. 



