186 Descriptive Catalogue [1896. 



pale yellow, the others infuscate ; head and prothorax closely 

 punctured, the latter shagreened, and with a small round spot on the 

 disk on each side of the median groove ; elytra moderately costate, 

 elongated, each one with a broad, slightly diagonal, yellow humeral 

 band reaching from the base to about the median part, and a more 

 or less rounded postical patch of the same colour above the apical 

 part, both band and patch connected by a broad marginal lateral 

 band which reaches from the base to the apex, the apical margin is 

 also narrowly edged with yellow ; owing to the sufl'usion of the yellow 

 markings, the black background assumes almost the shape of a 

 Maltese cross ; under side pale yellow, with the abdomen slightly 

 mfuscated. Length 9 mm. ; width 4 mm. 



Hah. Transvaal (Marico Distr.) ; occurs also in Senegal and 

 Kordofan. 



Gen. MASTAX, Fischer, 

 Ent. Euss., iii., 1825, p. 111. 



Mentum moderately emarginate and provided with a median 

 tooth, broad at the base and acute at the tip ; ligula narrow ; para- 

 glossse longer than the ligula ; palpi inflated and much acuminated 

 at the tip ; mandibles long, acute, with a sharp median tooth in the 

 inner side ; antennae pubescent, the third joint not much longer than 

 the fourth ; head rugose ; prothorax cordiform, much narrowed 

 behind, and with a median very broad and deep longitudinal groove 

 running from base to apex ; elytra subovate, costate, the costse raised 

 and sharp ; legs as in Bracliinus. 



Hah. The genus is represented in Europe (Caucasus), India, 

 Burmah, China, and Africa (Abyssinia). 



Synopsis of Species. 



Head and prothorax red; legs pale yellow, with the knees in- 

 fuscate. 



Elytra with two quadrate white patches on each side oniatcllus. 



Elytra with a crescent-shape anterior hand, and a quadrate 

 patch on each side cxtrcmus. 



Head, prothorax, and legs entirely black alhonotatns. 



Mast AX ornatellus, Bohem., 



Plate YII., fig. 6. 



Insect. Caffr., i., 1818, p. 74. 



Head red, with the labrum infuscate ; antennas with the two first 

 joints pale yellow, the others infuscate ; prothorax red, rugulose ; 

 elytra much broader than the prothorax at the base, slightly ampli- 

 ated in the middle, subconvex, striate, with the costae raised, black, 

 with a small more or less well-defined whitish basal band on the 



