Mr. E,. E. Turner on Fossorial Ilymenoptera. 621 



basal, more thickly on the apical segments, Avith the apical 

 margins of the segments indistinctly ciliated. There are a 

 few fulvous hairs on the disc of the mesonotum and on the 

 clypeus. Tlie yellow colour on the inner margin of the eye 

 extends upward to the emargination which is wholly yellow. 

 Radial cell broadly rounded at the apex^ extending very 

 little beyond the second cubital cell. 



This beautiful species seems to be common round Lake 

 Nyassa^ many specimens having been sent by Mr. S. A. 

 Neave (A. E. R. C.) captured in February and March on the 

 south-west shore and on the Upper Shire. There are also 

 specimens in the Berlin Museum from Langenburg, 



Sculia (Bielis) coUaris, Fabr, 



Tiphia coUaris, Fabr. Syst. Ent. p. 354. $ . 

 Scolla senilis, Fabr. Eut. Syst. ii. p. 237. J. 

 Scolia eriojjhora, Klu<i-, Syuib. pliys. iii. p. 14. J . 



The male of this species is very variable, though the form 

 e/lojj/wra seems to be tolerably constant in the localities in. 

 Avhicli it is prevalent. In the localities in which the form 

 senilis is prevalent, varieties showing more or less tendency 

 to orange-red abdominal bands frequently occur. Tiie 

 localities for the species in the British Museum collectiou 

 range from the Gambia River to Karachi. The male form 

 senilis occurs throughout North Africa from Mogador to 

 Tripoli, there being no specimen in the collection from those 

 localities with the abdominal bands at all strongly developed. 

 In Egypt, Arabia, Baluchistan, and Karachi eriophora seems 

 to be constant, and may be called the Eastern form of the 

 male ; but a considerable series from Gibraltar and a few 

 specimens from the Gambia are all eriophora. The same 

 form also occurs throughout East Africa as far south as 

 Mashonaland and in Madagascar as the male of Scolia calebs, 

 Sichel ; which may be looked on as the Ethiopian race of 

 collaris. Saussure suggests that S. dimidiatipennis , Sauss., 

 is also a form of the female, but apparently the two forms 

 occur together on the Gambia, and in other localities 

 ccelebs and dimidiatipennis seem to occur together, though 

 larger collections and more accurate data are needed before 

 certainty can be reached. The male of dimidiatipennis is 

 scarcely to be distinguished from the form senilis, though 

 more strongly glossed with blue on the abdomen. 



