BEES IN BRITISH MUSEUM. 323 



It is probable that some of the African forms should be separated 

 generically, but I do not feel able to define such genera without 

 access to more material. 



TRIGON.4 Jurine. 



Honey colored; hiud tibise translucent; sides of face white-pollinose. 



luteipes Sin. 

 Not honey colored 1. 



1. Abdomen red bipartita Lep. 



Abdomen not red ; insect black or almost 2. 



2. Size much larger capitata Sm. 



Size much smaller 3. 



3. Each side of face grey-pollinose ; hair of scutellum black. . mexieaiia Guer. 

 Sides of face not pollinose; wings not so dark as in mexicana : middle of cly- 



peus reddish ; flagellum clear red beneath bilineata Say. 



Another small black species is T. eressonii Dalla Torre. 



IIS I IS Lepeletier. 

 I.cslis bombylans (Fabr.) % . 



Thorax and abdomen yellowish green; thorax in front with ful- 

 vous hair, the three bands just visible as a darker shade; light area 

 on face red. 



Lestis ii-rala Smith % . 



Thorax and abdomen bluish green, with blue shades on thorax; 

 thorax in front with three black bands and fulvous between them ; 

 light area on face pellucid or opaque white. Female bluer than 

 that of bombylans. Var. violascens (var. nov.), $ , has much violet 

 color on abdomen. 



ALLODAPe Lepeletier. 



General appearance like Ceratina; only two submarginal cells; 

 first s. m. very much longer than second, second receiving both r. 

 n. ; stigma large. 



The three Australian species may be separated thus: 



Sides of face yellow ; abdomen with suffused brown bands picta Sm. (T.). 



Only middle <if face light ; abdomen black, without bands 1. 



1. Larger siniillima Sm. (T.). 



Smaller nnicolor Sm. (T.). 



The following are African : 



Abdomen red rufogastra Lep. 



Abdomen reddish ; scutellum yellow, except margins (Natal). Tariegata Sm. 



TRANS. AM. ENT. SOC. XXXI. AUGUST. 1905. 



