Aculeate Hymenoptera in Oxford Museum. 535 
as long as the 8rd; thorax: broader posteriorly than anteriorly ; 
abdomen: basal joint slightly longer, its ventral carina twice incised ; 
3rd segment only with a pubescent interrupted white band above ; 
4th segment entirely black; pygidial area flat, well defined and 
punctured, no tubercle on ventral valve of 6th segment. 
Length ? 11 mm. 
Described from a single specimen. 
18. MUTILLA IPHIANASSA, form n. 
RHODESIA: East Loangwa District, Petauké 2400 ft. : 
April 1, 1905 (S. A. Neave). 
9. Black ; mandibles at apex, the antennal tubercles and the 
thorax above a very dark obscure red, this colour on the thorax 
not extended to the anterior or posterior margins, but leaving an 
edging of black which is broadest on the median segment. Head 
and thorax above densely, the abdomen more sparsely clothed with 
erect brownish hairs; the abdomen with a thin scattered covering 
also of recumbent black hairs. Head closely and finely punctured, 
subquadrate slightly broader than long and slightly broader than 
the thorax anteriorly ; mandibles acute ; eyes ovate closer to the 
base of the mandibles below than to the occiput above ; antennae ; 
scape shining with a few scattered brown hairs, flagellum opaque, 
basal two joints minutely but densely pubescent, Ist joint very 
short, 2nd twice as long as 3rd or 4th. Thorax nearly rectangular, 
coarsely cribrately punctured, very slightly broader posteriorly 
than anteriorly, arched in front, the sides dentate in the middle, 
behind which they are slightly emarginate, posteriorly the dorsal 
surface passes with an even but steep slope to the apex of the 
median segment; legs short, slender, tibiae of the intermediate 
and posterior pair of legs with a single row of spines, calcaria 
very slender, short and white. Abdomen: massive, sessile, finely 
punctured and shining; 1st segment immaculate, ventral carina 
thick and deep, strongly incised in the middle; 2nd segment with 
a triangular spot in the middle at base and a slender medially 
widely interrupted line of yellowish pubescence on its apical margin 
above ; 3rd segment with a broad similarly interrupted band of like 
pubescence above; 6th segment shaded by a tuft of long yellowish 
hairs which hides the comparatively well-defined but small flat 
transversely striate pygidial area ; abdomen beneath covered rather 
densely with soft reddish-brown hairs. 
Length ? 8-9 mm. 
Described from a single example. 
