[NSDCUTOR INSCITI^ MENSTRUUS 193 



Aphiochaeta divergens Malloch. 



Proc. U. S. Nat. Mus., vol. 43, p. 480 (1912). 

 I have two good series, comprising both sexes of this species. 

 One lot collected by Dr. Nason at Algonquin, Illinois, years 

 ago agrees perfectly with the original description but a series 

 from Pullman, Washington, collected by Professor Melander, 

 have the palpi somewhat infuscated instead of clear yellow, 

 although otherwise indistinguishable. The Illinois specimens 

 were taken in September and the Washington ones in May 

 and September, some of them on windows. The anterior 

 tarsi, especially the metatarsus, are strongly thickened in the 

 male, but not noticeably so in the female. 



Aphiochaeta glabrifrons Wood. 



Entom. Monthly Mag., vol. 20, p. 27 and 62 (1909). 

 A single female undoubtedly belonging to this palaearctic 

 species was taken at Framingham, Massachusetts, by Mr. C. 

 A. Frost. The proboscis is swollen and very pale yellow like 

 the anterior coxse. 



Aphiochaeta modesta, new species. 



Male. Length 2 mm. Black ; legs very dark brown, with 

 the front pair much lighter and their coxae light brownish 

 yellow ; palpi clear yellow ; halteres black ; anal organ deep 

 yellow with dusky base ; wings distinctly tinged with brown, 

 heavy veins pale, but light veins rather dark. Front short, one- 

 third broader than high ; slightly shining. Two pairs of pro- 

 clinate bristles, the lower pair much smaller and rather close 

 together; upper pair very widely separated, occupying slightly 

 more than one-third of the width of the front ; bristles of lower 

 row very close together next the eye, but the inner one dis- 

 tinctly lower than the outer one which is in line with the 

 upper proclinate bristles ; upper row of four nearly equidistant 

 bristles, the middle pair a little lower than the lateral ones ; 

 ocellar tubercle and median frontal groove well developed. 

 Antennae somewhat under-sized, the arista long, slightly more 

 than twice as long as the height of the front. Labrum not 



