12 THE CANADIAN ENTOMOLOGIST 



3. Abdomen with dorsocentral vLtta and more or less distinct lateral black 



spots; hind tibia with 1 ahteroventral bristle ; the pair of long bristles on 

 basal portion of hypopygium widely separated, much closer to latero- 

 posterior margin than to central cleft; processes of fifth sternite as 



broad as long cordyluroides Stein. 



Abdomen with only a more or less distinct dorsocentral vitta, the lateral 

 spots absent; hind tibia with two anteroventral bristles; the pair of 

 long bristles on basal portion of hypopygium rather closely placed, 

 much closer to central cleft than to lateroposterior margin ; processes 

 of fifth sternite longer than broad littoraUs Malloch. 



4. Hind femur with rather widely spaced bristles on entire length of antero- 



ventral surface; apical genital segment with two strong thorns; scu- 

 tellum with numerous setulose hairs on entire upper 



surface robusta Johnson. 



Hind femur with strong bristles only on apical half of anteroventral sur- 

 face ::.. : 5. 



5. Apical genital segment with two strong thorns; hind tibia with one antero- 



ventral bristle; scutellum with a number of setulose hairs on 



disc cordyluroides Stein. 



Apical genital segment with four strong thorns; hind tibia with two antero- 

 ventral bristles; scutellum very rarely with more than two discal 

 setuke littoralis Malloch. 



Eulimnophora Malloch 

 This genus is represented by many species in Africa. 



Key to Species. 



1. Thorax conspicuously vittate; palpi and tibiae largely 



yellowish dorsovittata Malloch. 



Thorax inconspicuously vittate; palpi black; tibiae black, sometimes 

 yellowish at bases 2. 



2. Large species, normally over 4 mm. in length; hind femora in both sexes 



with from 3 to 6 bristles on apical half of anteroventral surface, the 



space basad of these with weak decumbent hairs arcuata Stein. 



Smaller species, less than 4 mm. in length ; hind femora in both sexes with 

 a series of short erect bristles, which are rather closely placed, from 

 base to apex on anteroventral surface, the apical two or three much 

 longer than the others cilifera Malloch. 



Xenocoenosia Malloch 



Key to Species. 



1. Males 2. 



Females 4. 



2. Large species, 4.5 mm. in length; abdomen without glossy bare areas on 



sides of third and fourth tergites; hind femur without dense, soft 

 hairs on ventral surfaces, the antero- and posteroventral surfaces with 

 long, black bristles which are unequal in lengths, the longest one on 

 anteroventral surface about one-third of the femoral length from 

 apex major Malloch. 



