Aculeate Hymenoptera in Oxford Museum. 539 
white. Abdomen subsessile as long as the head and thorax united 
closely punctured above; ventral carina of basal segment well 
marked, truncate posteriorly ; 6th segment convex without a 
pygidial area. 
Length 9 7 mm. 
Described from a single example. 
23. MUTILLA LOANGWANA, form n. 
RuHopesiA : Loangwa District, Petauké 2400 ft.: April 
1, 1905 (S. A. Neave). 
¢. Black; the third and succeeding segments of the abdomen 
very dark ferruginous red ; wings dark shining purple. Head not 
so wide as the thorax, not much developed behind the eyes; with 
somewhat sparse long black hairs on the vertex, front and underside ; 
mandibles large and powerful, smooth and shining, armed with a 
small tooth medially on their edges, apex acute ; clypeus slightly 
convex, smooth and shining, anteriorly widely emarginate ; antennae 
comparatively short and stout, scape punctured and clothed with 
short hairs, flagellum with the 2nd, 3rd and 4th joints subequal ; 
front above the antennae, vertex and sides of the head coarsely 
punctured, the sculpturing obscured by long hairs ; ocelli not pro- 
minent ; eyes rather small neatly triangularly emarginate on their 
inner orbits. Thorax broad and massive, very coarsely punctured 
and somewhat thickly covered with long black hairs; pronotum 
very short, posteriorly widely arched ; mesonotum slightly convex, 
with six longitudinal carinae, none of which reach the anterior 
margin, the medial four in pairs with a deep groove between each 
pair; scutellum highly conical, divided by a deep smooth excavation 
from the mesonotum, median segment remarkably massive and 
broad, broader than long, very coarsely cribrate, apically truncate, 
two short longitudinal carinae from base down the middle ending 
in a loop before attaining the edge of the truncation; sides of the 
median segment sharply defined and carinate. Wings broad ; fore- 
wing with three cubital cells ; tegulae black, rounded, convex, covered 
with more or less arcuate or curved fine striae. Legs black ; inter- 
mediate and posterior tibiae thickly clothed with long black hair. 
Abdomen : sessile, massive ; basal segment more or less cupuliform, 
closely punctured, and distinctly subapically constricted by a broad 
but shallow sulcation, entirely clothed with long black hairs, 
beneath with a short straight highly raised wedge-shaped carina ; 
second segment smooth shining, remotely and finely punctured 
above, beneath with large scattered punctures, fringed along upper 
