Mr. R. E. Turner on Fossorial Hymenoptera. 295 
2. Clypeus opaque, the apical margin shining and very 
narrowly and shallowly excised in the middle ; eyes separated 
on the vertex by a distance equal to about two-thirds of the 
length of the second joint of the flagellum. Mesonotum 
opaque, pruinose; with a delicate impressed line from the 
middle of the anterior margin, not reaching more than halfway 
to the middle of the segment ; a similar short impressed line 
on each side before the tegule. Scutellum smooth and 
slightly shining. Median segment longer than broad, mar- 
gined at the apex ; transversely striated, the strie distinct at 
the base, obsolete on the apical half; a very delicate longi- 
tudinal carina from the base not reaching the apex; the 
surface of the posterior truncation with a deep median sulcus, 
transversely striated at the sides, the striz obsolete in the 
middle. Abdomen pruinose ; pyzidial area rather broadly 
truncate at the apex, finely rugose, sparsely clothed with very 
short pubescence which changes according to the light from 
fuscous to pale golden, a few strong fuscous sete on the 
apical margin. Basal sternites pruinose ; the second at the 
base with the usual structure of the genus. Comb of the 
anterior tarsus rather short, the basal joint with four spines ; 
tarsal ungues long, with a small triangular tooth near the 
middle. First abscissa of the radius as long as the second 
and third combined, the fourth longer than the first ; radial 
ceil narrowly truncate at the apex ; recurrent nervures very 
narrowly separated on the cubitus. 
Hab. Mlanje, Nyasaland (S. A. Neave), Beeentiar 
This may be distinguished from other described species of 
similar colouring by the tooth on the tarsal ungues. 
Other localities are :—Bomaru, Sierra Leone (J. J. Simp- 
son), August ; Oshogbo, 8S. Nigeria (Dr. 7. I. G. Mayer) ; 
Entebbe, Uganda (C. G. Gowdey), June. 
Liris africana, sp. n. 
@. Nigra; scapo subtus ferrugineo ; fronte clypeoque argenteo- 
pubescentibus ; area pygidiali fusco-aureo-pubescente ; alis nigro 
ceruleis. 
Long. 23 mm. 
?. Clypeus with a carina from the base to the apex, 
slightly produced in the middle of the apical margin and with 
a minute tubercle on each side at the apical angles. Hyes 
separated on the vertex by a distance equal to the length of 
the second joint of the flagellum, which is distinctly longer 
than the third. Thorax subopaque, coriaceous. © Median 
