new genera and species of Callichrominfe. 399 



The variation in colour of this species extends from rich 

 dark-blue to greenish-blue, and the black velvety pile in fresh 

 specimens is visible chiefly in slight depressions on the elevated 

 disc of the thorax, at the base of the elytra, in the sutural 

 depression, and on the sides. In some individuals there is a 

 sparse and fine punctuation along the shining and slightly 

 elevated central line of the elytra, from the shoulders to the 

 apex. The scutellum varies in length and in the number of 

 transverse wrinkles ; in some examples the latter being replaced 

 near the base by a finer granulation. The sexes do not differ 

 except in the usual character of the number of ventral segments, 

 the $ having six and the ^ five only. The antennae differ 

 very slightly in length, being in both sexes a little shorter than 

 the body. 



Cameroons, also Angola. 



Jilecaspis cra'sus. 



Splendide aurata, subviridis : an tenuis et pedibus nigris, 11 lis 

 scapo castaneo-rufo, his femoribus (basi et apice exceptis) sau- 

 guineis, tarsis argenteo-pilosis : capite fere Ifevi : thorace disco 

 elevato sparsim punctato vix ruguloso, sulcis anticis et posticis 

 laivibus : elytris passim hand crebre punctulatis, plagis sub- 

 humerali et sublaterali tenuiter velutinis : margine laterali mox 

 ab humero usqu.e paulo ante apicem explanato-reflexo : prosterno 

 (ante pedes) utrinque vitta griseo-pilosa. 



9 Antennai Ijreves, dimidio corpori oicjuales, Segmentum 5 

 ventrale apice crassi-marginatum vix sinuatum. Long. 20 lin. 9 • 



Agrees with the following species in the reflexed-explanate 

 lateral margins of the elytra, and in the pilose vitta on each 

 side of the anterior part of the prosternum ; but differs in the 

 bright golden colour, shorter antenna, punctvu-ed thorax, and 

 form of last ventral segment. There is but a very slight trace 

 of velvety vitta on the disc of the elytra. 



Gaboon. 



Mecaspis explanata. 



Saturate viridi-cyanea, elytris plaga basali vittisquc suturali 

 et sublaterali can-uleo-violaceo-velutinis : antennis pcdil)usque 

 nigris, tarsis argenteo-pilosis, femoribus interdum medio rufis : 

 capite subtihter punctulato : thorace lajvi, disco elevato utriucpie 

 violaceo-velutiuo : elytris amplis, margine latei-ali ex])laiiato- 

 reflexo, supra politis sparsim punctulatis, vittis violaceo-velutinis 

 opacis : propectore utrinque griseo-piloso. 



