398 Mr. H. W. Bates's descriptions of 



M. Iceta, Hope, Ann, & Mag, Nat. Hist. vol. xi, 1843, p. 368 

 partim ? 



Tiie colour varies iDetween bright brassy-green, sometimes 

 verging towards golden, especially at the ajDex of the elytra, 

 and greenish-blue. The neighbourhood of the suture is sHghtly 

 depressed. There are ahvays traces of short black velvety j)ile, 

 chiefly on the disc of the thorax, at the middle of the base, and 

 along the sides and suture of the elyti'a ; but it is never dense 

 enough to obscure the bright metallic colour of the integument ; 

 the latter is more strongly punctured, even along the glabrous 

 central longitudinal line, Avhere a few sparse points are visible, 

 the rest of the surface, like the disc of the thorax, being exces- 

 sively minutely punctulate-rugulose. The transverse ridge Avhich 

 bounds posteriorly the elevated disc of the thorax, is vertical 

 (as in the foregoing species), but depressed in the middle. The 

 fifth ventral segment $ is normal in size and shape, i.e., not 

 notably narrowed and elongated, and the apex is very slightly 

 sinuated in the middle. 



Cameroons River. 



Mecaspis chri/sogaster. 



Viridi-ajuea, elytris vittis raturatioribus duabus velutinis, 

 altera a medio basi usque ad apicem suturalem extensa, altera 

 breviori sublaterali, reliquis lineis lougitudinalibus nitidis punc- 

 tato-rugulosis : abdomine igneo-aureo resplendenti : autennis 

 jiedibusque nigris, tarsis pectoreque argenteo-sericeis. Long. 

 13 lin. ?. 



The head is thickly punctured in front and golden-green. 

 The thorax is transverse as in the other species, strongly sulcate- 

 constricted in front and behind, with the middle part elevated 

 and nearly plane, this part has a scarcely perceptilile pile and is 

 throughout finely alutaceous and moderately shining. 



Cameroons, 



Mecaspis snbvestita. 



Saturate ean-ulea vol viridi-cyanea, supra plagis nigro-velutinis 

 exceptis glabra, antennis pedibusque nigris, tarsis argenteo-pilosis, 

 pectore abdominisque lateribiTS subtiliter argenteo-sericeis: capite 

 punctulato : thoracc antice et postice siilcato-constricto, lan-i, 

 disco elevato subplauo : elytris a basi usque ad apicem attenuatis, 

 subtiliter alutaceis, regione suturali per totam longitudinem late 

 depressa. Long. 1 2 lin. $ , ^ . 



