366 MEMOIRS ON THE COLEOPTERA 



which, like that of the clypeus, differs from anything else known 

 in the tribe. 



In all the numerous African types the clypeus is entirely different 

 from that of our genera, being nearly flat, subquadrate and very 

 feebly or scarcely at all reflexed at tip, more nearly as in Euphoria, 

 and the mentum assumes very diversified forms, being sometimes 

 small or, as in Scaptobius, very large, generally flat, sometimes 

 deeply sinuate at apex as in Macroma, or entire as is usual. It is 

 probable, in fact, that structural peculiarities are more varied and 

 radical in this tribe than in any other of the Cetoniinae. 



Group I. 

 Subgenus Trinodia in sp. 



The species of this subgenus frequently have a pale testaceous 

 coloration, quite unlike anything known in Cremastocheilus in this 

 respect, and the integuments are strongly shining and feebly 

 sculptured as a rule above as well as beneath; those known thus 

 far are the following: 



Anterior tibiae slender, subpedunculate basally, the inner margin rather 

 abruptly constricted behind about the middle, the upper of the two 

 external teeth at about the middle of the length. Body rather small, 

 parallel, slightly convex, shining, clear testaceous throughout, the 

 erect hairs rather long but sparse and easily broken or removed; 

 head evenly convex, finely but not densely punctate, the anterior 

 slope steep but gradually formed, the clypeus strongly reflexed, the 

 middle of the reflexed margin connected with the middle of the front 

 at the beginning of the slope by a very high thin and conspicuous 

 carina; sides of the clypeus, first antennal joint and the very promi- 

 nent ocular canthus having many long coarse bristles; prothorax 

 nearly three-fifths wider than the median length, the sides subparallel 

 and feebly arcuate, slightly widest anteriorly, the lateral sections 

 strongly convex, moderately punctured, smooth basally, the median 

 less convex section moderately convex, distinctly impressed along 

 the middle and with numerous moderate punctures bearing bristling 

 setae; scutellum very finely attenuate at apex, variably punctulate; 

 elytra three-fifths longer than wide, subequal in width to the pro- 

 thorax, parallel, rounded at apex; surface depressed on the disk, 

 broadly convex and then steeply declivous at the sides, having, 

 discally, very slender narrow shallow unimpressed areolae, moder- 

 ately close-set and not so opaque as in the preceding genus, the 

 punctures at the sides small, rounded, not deep and well separated; 

 pygidium large, strongly convex, evenly and very finely, rather 

 densely punctato-scabriculate; legs slender; hind tarsi scarcely at all 



