41© Mr. R. E. Turner on Fossorial Hymenoptera. 



$ . Sixth dorsal segment narrowly rounded at the apex, 

 the sides scarcely sinuate. The ochraceous marks on tlie 

 second and third dorsal segments are in some specimens 

 more developed and form narrowly interru})ted bands. 



Hah. Nvasaland, Blantvre, 3000 ft.^ April; Mlanji Boma, 

 2400 ft., May {S. A. Neave). 



Belongs to the fuscipennis group. 



Subfamily Ntssoa'ikjs. 



Genus Paranysson, Guer. 



Paranyssoii, Gii^r. Icon. regn. anim. vii. Insect, p. 441 (184o). 

 Helioryctes, Sm. Cat. Hyui. B.M. iv. p. 358 (1850). 



Smith\s name for the genus must sink. "Whether the 

 group should be treated as a subgenus of Nysson or as a 

 separate genus is a matter of opinion. There does not seem 

 to be any good structural distinction apart from the spine 

 on the hind coxse, and the absence of a spine at the angles 

 of the median segment. 



Paranysson melunopyrus, Sm. 

 Helioryctes vielanopyrus, Sm. Cat. Ilyni. B.M. i\. p. 359 (1856). J. 



Hab. Gambia {Smith). 



A specimen from Pakasa, N. Rhodesia, in tlie Silverlock 

 collection, differs from the type in the more regular striatiou 

 of the median segment^ the strise not being joiucd by small 

 transverse strife, which make the segment more or less 

 reticulate in the typical form, in which the two minute teeth 

 at each angle of the clypeus are somewhat less distinct than 

 in the Ivhodesian specimen. 



Nysson hdioryctoidcs, sp. u. 



5 . Nigra ; abdomiue pedibusque rufo-ferrugineis ; alls fusco- 



violaceis. 

 Long. 7 mm. 



?. Front between the antennae without a carina; a dis- 

 tinct carina along the outer margin of the eyes. Posterior 

 ocelli nearly twice as far from each otiter as from the eyes, 

 ■which diverge rather strongly towards the clypeus. Anteunaj 

 shorter than the greatest breadth of the head ; the second 

 joint of the flagellum as long as the third; the fifth joint as 

 broad as long, as are also the other joints up to the ninth. 

 Clypeus broad, subcarinate in the middle, slightly emar- 

 giuate in the middle of the apical margin. Head and 



