112 Mr. R. E. Turner on Fossorial Hymenoptera. 



tlian in the female, but has the carina at tlie base ; the eyes 

 are a little furtiier apart on the vertex, the second joint o£ 

 the flagellum is fully as long as the third. The broad form 

 of the seventh dorsal seoment is remarkable. 



Hah. Aslianti, Obuasi [W. M. Graham), April, Feb- 

 ruary : Uganda, Entebbe [C. G. Gowdey) (type), September 

 and March; Egypt, Meadi (Egyptian Department of Agri- 

 culture), July; Sierra Leone [Morgan). 



I had identified this species as xanthopv;>, Brulle, in my 

 recent paper on Pison (Proc. Zool. Soc. 1916), but since 

 then have found other specimens answering much better to 

 Brulle's description. The present species may possibly be 

 obscurus^ Sliuclc, but the type of that species is lost and 

 tlie description gives the pubescence of the front as golden, as 

 in xanthopus. 



Pison xantJiopus^ Brulle. 

 Kephridia xanthopus, Brull6, Ann. Soc. Ent. France, ii. p. 408 (1833). 



2- 



Four females in the National Collection answer well to the 

 description. They differ from carinatum and strigulosum in 

 the bright golden pubescence of the front and in the red 

 colour of the two or three apical abdominal segments. Tliere 

 is no basal carina on the clypeu^i as in carinatus, which it 

 resembles in the sculpture of the median segment, and differs 

 in tlie latter point trom strigulosum. The clypeus is more 

 distinctly truncate at the apex than in either of the other 

 species. P. clgpeaius, Cam., seems to belong to the same 

 group. I do not tliink that Shuckard's description of 

 ohscurus can be meant for tlie present species. 



Uab. N. Nigeria, Kateri {J. J. Simpson), December; Gold 

 Coast, Aburi [L. Armstrong), April. 



Pison flavoUmhatum , sp. n. 



$. ISIigra; segmentis dorsalibus tribus basalibus fascia apicali 

 flavidula ; scapo tegulisque brunneo-testaceis ; fronts, pronoto 

 segmeutoque mediano lateribus pallide aureo-pubesceutibus ; 

 alls subhyalinis, costa late iufuscata, venis nigris. 



Long. 10 nam, 



? • Clypeus convex, broadly truncate at the apex, without 

 a carina ; liead opaque, a distinct frontal sulcus reaching to 

 the anterior ocellus ; eyes a little further apart at the base 

 of the clypeus than on the vertex, posterior ocelli as near to 

 each other as to the eyes ; an undulating, low, transverse 

 ridge separating the anterior from the posterior ocellar 



