304 Mr. R. E. Turner on Fossorial [lymenoptera. 



differing slightly in colour, though not always very constant : 



(1) E. rujiceps, Sra., the typical form, is from Natal; 



(2) E. rujiceps diapherogamia, Sauss., from the south of the 

 Transvaal ; (3) E. rujiceps atopogamia, Sauss., from Lake 

 Nyasa. Other forms which are nearly related and will pro- 

 bably prove to be subspecies are E. adeloyamia, Turn., from 

 Basutoland ; E. heterogamia, Sauss., which ranges from 

 Delagoa Bay to Mlangi in South Nyasaland ; and E. hova, 

 Turn, {nodosa, Guer., ? ?), from Madagascar. If the latter 

 is included, nodosa will have to be used as tlie specific name. 

 I am able to associate males Math the three subspecies given, 

 though only on circumstantial evidence. 



The following key will serve to distinguish the nearly allied 

 forms in both sexes : — 



$ 5. A. Wings hyaline, slightly tinted with 



fuscous. Legs black E. heterogamia, Sauss. 



B. Wings fuscous, more or less glossed 

 with blue or purple. 



a. Legs black. 



«^. Front and scape black E. adelogamia, Turn. 



6^. Front and scape red E. hova, Turn. 



b. Legs red. 



a^, Pronotum black, except on the 

 posterior margin ; mesonotum 



and scutellum black E. rujiceps rujiceps, Sm. 



y^. Pronotum and scutellum red. 



a\ Mesonotum almost entirely [gamia, Sauss. 



black E. rujiceps diaphero- 



b^. Mesonotum red E. rujiceps atopogamia, 



[Sauss. 

 S S- A. Posterior tibiae and tarsi testaceous. 

 Wings clear hyaline, without blue 



gloss E. nodosa^ G u^r. 



B. Posterior tibise and tarsi black above, 

 sometimes ferruginous beneath. 



a. Wings hyaline, slightly glossed 



with blue E. rujiceps diaphero- 



b. Wings strongly shaded with fus- gamia, Sauss. 



ecus. {^diyuncta, Turn.). 



a*. Abdomen finely but distinctly 

 punctured, with short pubes- 

 cence E. rujiceps rujiceps, Sm . 



h'^. Abdomen obsoletely punctured 



at the base, shining and with [Sauss. 



less pubescence E. rujiceps atopogamia, 



The comparative length of the second and third abscissae 

 of the radius does not seem to be quite constant in either 

 sex, but the second abscissa is shorter in hova and diaphero- 

 gamia than in the other forms. Hova also differs in being 

 more closely punctured. In nodosa, Guer., the basal abdo- 

 minal segment is much more slender than in the other forms. 



