Aculeate Hymenoptera in Oxford Museum. 547 
identical so far as can be seen (the specimen is much 
rubbed) with 2? O. angulata. However, it is quite possibly 
distinct or perhaps it is the ? of the next form, 0. alienata. 
41. ODONTOMUTILLA ALIENATA, form n. 
NatTAL or O. R. Colony $ 1894-99 (Ff. N. Brown). 
¢@. Black, the pro- and mesonotum, the upper half of the pro- and 
mesopleurae, the scutellum and postscutellum red ; the head, thorax 
legs and base and sides of the abdomen covered with short erect 
black hairs; the abdomen with a transverse broadly interrupted 
narrow pubescent white band on the apical margins of the Ist and 
3rd segments ; wings fuscons, tegulae yellowish red. Head not so 
broad as the thorax in front, transverse ; mandibles acuminate at apex 
with a preapical blunt tooth on the inner margin, antennae stout, 
Ist and 2nd joints of the flagellum short subequal, 3rd joint much 
longer than the 2nd ; eyes oval, deeply emarginate, head behind 
the eyes not much developed, rounded. Thorax short and broad, 
truncate anteriorly ; scutellum broad flat, the lateral edges recurved, 
pointed, almost dentate posteriorly ; median segment short and 
sloping with very large conical lateral projections, one on each side 
posteriorly ; tegulae large, their apical edges recurved; forewings 
with two cubital cells and one recurrent nervure ; legs stout with a 
double row of long spines on the intermediate and posterior tibiae. 
Abdomen sessile, about as long as the head and thorax united, basal 
segment short, its ventral carina deep, bi-indented. Head and 
thorax coarsely cribrately punctured, the punctures deeper and 
coarser on the mesonotum posteriorly and on the scutellum, median 
segment coarsely reticulate, the reticulations very wide ; abdomen 
shining, coarsely punctured except on the middle and apical 
margins of the segments which are smooth and highly polished. 
Length ¢ 13. Exp. 21 mm. 
This form very closely resembles the ¢ of O. angulata, 
Smith, from which, however, it can be distinguished by the 
form of the median segment, which is much shorter than 
in O. angulata, the posteriorly produced lateral angles 
more massive and situated lower down; in O. anqulata 
the pronotum is red only along the upper edge, in the 
present form it is red throughout ; the wings in angulata 
are fusco-hyaline, in alienata very much darker with a 
purple effulgence. 
Described from a single specimen of which the South 
African locality is unfortunately doubtful. 
