56 Annals of the South African Museum. 



segments black ; acetabula, lateral margins of sternum, posterior 

 margin of prosternurn, and biannulations to first and second joints of 

 antennae reddish-ochraceous, third and remaining joints of antennas 

 castaneous ; first and second joints of rostrum about equal in length 

 or first slightly the longest ; body and legs moderately pilose ; 

 membrane brownish-ochraceous, its basal margin irregularly black ; 

 anterior lobe of pronotum centrally sulcate, posterior lobe entire ; 

 ante- and postocular areas of head about equal in length. 



Long. 11-g 16 mm. 



Hob. Nyasaland ; Fort Johnston (Kendall) ; Transvaal ; Lyden- 

 burg District (Pret. Mus. and Coll. Disk). 



MARGASUS OPULENTUS, sp. n. 



Head, rostrum, antennae, tibiae, and tarsi castaneous ; pronotum, 

 cerium, and sternum ochraceous densely pilose ; connexivum 

 ochraceous, glabrous ; lateral angles and posterior margin of 

 pronotum, and a large subquadrate spot on the first four segments 

 of the connexivum shining indigo-blue ; membrane shining, brassy- 

 green ; abdomen beneath shining olivaceous-green ; anterior and 

 intermediate femora shining olivaceous-green, their apices castaneous; 

 posterior femora castaneous with a subapical olivaceous-green annula- 

 tion ; coxae and trochanters dark castaneous. Basal joint of 

 antennae about as long as head and pronotum together ; second and 

 third joints together shorter than the first ; head a little shorter than 

 pronotum ; lateral pronotal angles a little prominent and obtusely 

 angulated. 



Long. 30 mm. ; exp. pronot. angl. 8 mm. 



Hob. Nyasaland ; Fort Johnston (Dr. P. Kendall). 



