lUJ TIIK rANAI>l.\N KN'HJMOI.OOIST. 



mottled brown and light yellow with aggregations of light scales at the 

 apices of the ultimate and penultimate joints simulating bands ; proboscis 

 mostly yellow, base dark brown, and an irregular band of dark brown at 

 the apical portion ; labella> light. 



The abdominal markings vary greatly in both sexes ; in some speci- 

 mens the males have a nearly pure yellow abdomen with narrow dark 

 brown apical bands, while in others the abdomen is much darker, the 

 "spots" only being light ; the females are darker than the males, but 

 even then vary much, being often dark with small median yellow spots 

 and very small white apical lateral spots, the last two segments mostly 

 light, sometimes with a narrow sub-apical dark band. Sometimes the 

 median spots are while, and there are two subniedian nearly apical yellow 

 spots making a suggestion of triangular marking, the base towards the 

 apex of the segments, and the small lateral white spots are extended into 

 a very narrow cephalocaudad line on most of the segments. The ventral 

 tufts are not so pronounced as in the male and could easily be overlooked; 

 the venter is yellow with apical brown bands. 



Legs as in the male, but the last joint in either may be yellow with a 

 dark basal spot or band. Ungues are uniserrate on all the legs. 



Wings as in male, but darker. 



Ste^omyia nii;rit/a, n. sp. (female). 



Head dark brown, closely covered, except the very tip of the vertex 

 which is partly white, with dark brown flat scales and a few brown 

 bristles ; antennas brown, veriicels and pubescence brown, basal joint 

 brown with a few white flat scales ; palpi dark brown, ultimate joint and 

 apex of penultimate brilliant white ; proboscis dark brown ; clypeus dark 

 brown ; eyes dark brown. 



Thorax dark brown ; prothoracic lobes with brilliant white flat scales 

 and brown bristles ; mesonotimi with dark brown slender curved scales, 

 and a line of brilliant white scales at the lateral margin extending cephalad 

 from the wing joint almost continuously to the prothoracic lobes, and 

 |)artly on the pleura ; pleura brown with a few bunches of white scales 

 and the line just referred to at the junction of the mesonotum ; scutellum 

 with brown flat scales ; metanotum brown. 



Abdomen : Dark brown with dark brown scales and brilliant white 

 lateral spots sometimes extending across the tergum as very narrow basal 

 bands, venter brown with basal sub median brilliant while spots. 



