612 PROCEEDINGS OF THE ACADEMY OF [Uec, 



shallow punctures, sparsely clothed with small black hairs; eijes large, 

 almost hemispherical; antennce with fii-st two joints black, 3d to 11th 

 light orange; thorax black, closely punctured, clothed with a few black 

 hairs ; scuteUum very small, hardly visible, with a few fine black hairs ; 

 elytra black, punctured throughout not very closely with small, rather 

 deep punctures; there are also some small, fine black hairs over the 

 whole elytra which are marked with a median, yellow, transverse band 

 and also spots anterior and posterior to it, these markings arranged as 

 follows : on each elytron near the base is a large, almost circular bright 

 j^ellow spot; behind this is the irregular, rather wide, median trans- 

 verse yellow band which would lie in front of a transverse line which 

 might be drawn to divide the elytron into two halves ; about midway 

 between this band and the posterior margin of the elytron are two 

 orange-red spots, nearly round; the larger of these, which is smaller 

 than the basal spots above mentioned, is near the sutural margin of 

 the elytron, almost on a line with the basal spot; the other (hardly 

 half as large) lies opposite at the outer margin of the elytron ; basally 

 at the extreme humeral margin of the elytron is a yellow spot, longer 

 than wide, reaching to the margin of the elytron and narrowly con- 

 nected with the median yellow band; legs black, blackly hair}^, the 

 front femora and tibise covered with short yellowish silky hairs on their 

 inner surface. 



Type in my collection; cotype Cat. No. 12123, U. S. N. M. 



In some specimens the basal spots (both juxta-scutellar and humeral) 

 show a tendency to become confluent with the median fascia. 



This species is very prolific and appears in great numbers during 

 the rains. In March, 1908, at Gamba, Angola, I collected 194 speci- 

 mens in a few hours. Its principal food plant is Tribulus zegheri. 



46. Mylabris (M.) rufitarsis Mars., Jom. Sci. Math. Phys. Nat . Lisb.,VII, No. XXV, 1879, p. 52. 



Loanda (Welwitsch), HuiUa (Anchieta). 



47. Mylabris (M.'> senegalensis Voigts, Wien. Ent. Zeit., XXI, p. 178. 



Mylabris hifasciata Oliv., Ent., Ill, 47, p. 5, tab. 1, fig. 10 (nee Degeer). 

 Angola (Welwitsch), Angola — "aus dem inneren" — (Pogge). 

 Described from Senegal, also a variety (var. conjuncta Voigts, Wien. 

 Ent. Zeit., XX, p. 217) from Dar-es-Salaam. 



48. Mylabris (M.) sibylae Wellm. spec. nov. 



Nigra, statura magna sat rohusta, nigro-pubescens; capite {antenna 

 articulis 1, 2 nigris, 2, 3 fulvis, reliquis flavis; palpis hrunneis) pro- 

 thoraceque nigris subtiliter punctulatis, nigro-villosis, hoc longitudine 

 paulo latior, medio leviter bi-impresso; elytris nigris, dense subtiliter 



