Aculeate Hymenoptera in Oxford Museum. 541 
28. MYRMILLA AFRICANA, form n. 
Natau (Coll. W. W. Saunders). 
d+ Black and shining ; the apices of the mandibles, the antennal 
tubercles, apex of the scape, 2nd joint of the flagellum of the 
antennae, the pro- and mesonotum, and scutellum brick red. Head, 
thorax, legs and abdomen covered with sparsely scattered erect white 
hairs. Head finely punctured broader than long and slightly 
broader than the thorax, mandibles acutely pointed, apical half 
longitudinally grooved, two preapical blunt teeth on the inner 
margin ; antennae opaque, 2nd and 3rd joints of the flagellum sub- 
equal ; eyes oval, entire, slightly convex. Thorax rounded in front, 
posteriorly roundly truncate, finely punctured, the median segment 
reticulate ; wings flavo-hyaline, forewing with the stigma small, the 
radial cell short and wide, two complete cubital cells, the third 
cubital faintly traced, the 2nd recurrent nervure present, terminating 
well beyond the 2nd cubital cell; legs slender, tibial calcaria 
elongate. Abdomen nearly smooth, only very sparsely and finely 
punctured ; 1st segment with the carina not much raised. 
Length ¢ 6mm. Exp. 11 mm. 
Described from a single example. 
Notr.—The manuscript of this memoir gave the name albicans 
to the above species ; but the specimen itself was distinctly labelled 
“africana, Bingham ¢, Type.”—E. B. P. 
29. DOLICHOMUTILLA VETUSTATA, form n. 
S. RoopEsiA: Mt. Kapsuku, nr. Feira 3400 ft. 2: May 
20, 1904; and N.E. Ruopesia, East Loangwa Dist., 
Petauké 2400 ft. ff: March 1 and 17,1905 (S. A. Neave). 
The specimen bearing the date March 17, 1905, is 
marked as the type. 
6. Jet black, the face in front somewhat sparsely clothed with 
long white hairs, the thorax with scattered erect black hairs the basal 
five abdominal segments fringed on their apical margins laterally 
with Jong white hairs; wings dark fuscous with a magnificent 
purple effulgence. Head, pro- and mesonotum, scutellum and post- 
scutellum very densely and somewhat coarsely punctured ; median 
segment reticulate, the reticulations large even and deep; abdomen 
closely but more finely punctured with the punctures shallower than 
on the thorax, on the middle of the segments above the punctures 
are sparse, the segments showing more or less of a smooth area, 
intermediate and posterior tibiae without spines. Head narrower 
