Aculeate Hymenoptera in Oxford Ihiseicm. 535 



as long as the 3rd ; 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 9 H "i™- 



Described from a single specimen. 



18. MUTILLA IPHIANASSA, form n. 



Rhodesia : East Loangwa District, Petauke 2400 ft. : 

 April 1, 1905 (.S'. A. Ncaie). 



?. Black ; mandibles at apex, the antenual 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. 



N N 2 



