KHINOTMETUS. 33 



equal length with those of the males ; the legs also (especially the 

 anterior tibiae) are not quite so robust. All the examples which I 

 have seen differ also sexually in shade of colour, there being in the 

 females an entire absence of a metallic coppery hue ; and the emerald 

 green colour, so conspicuously beautiful in the males, being repre- 

 sented by blue. 



This handsome species is not uncommon on the western coast of 

 Africa, Guinea, Senegal, and Old Calabar. 



Genus 5. RHINOTMETUS*. 

 Dej. Cat. (1837) p. 407. 



CORPUS elongato-ovale vel subovatum, conveoeum. 



LABRTJM transversum, integrum. 



HANTHBUL.E robustce, reconditce, ad apicem ipsum scepius fissce, necnon 

 intra apicem dente armatce. 



PALPI MAXILLARES elongati, subincrassati, art. 3 tio ad apicem oblique 

 truncato. 



PALPI LABIALES minuti, art. 2** lato. 



Axw^Mfiliformes, articulis I" 10 et 3 tio inter se cequalibus (illo distincte 

 robusto), 2 nd0 brevi, ultimo ad apicem acuminato. 



CA.v*UTplus minus antice productum, subattenuatum. 



THORAX elongatus, haud transversus, elytris plerumque multo an- 

 gustior, antice rotundatus et subcontractus, ad latera depressus et 

 marginatus. 



ELYTRA sat robusta, punctato-striata, modo vestita, modo nuda. 



ABDOMEN e segmentis quatuor compositum. 



PEDES saltatorii (femoribus posticis valde incrassatis) ; tibiis anteriori- 

 bus ecalcaratis, posticis calcari singulo unciformi armatis ; tar sis 

 pseudotetrameris, anterioribus subtus dense vestitis, artic. I" 10 et 

 3 tw dilatatis (hoc valde bilobo), posticis haud dilatatis, brevibus, 

 articulis I mo , 2 nd " et 3 tio subcequalibus (2 /ldo et 3 tio inter se subarctius 

 connatis), subtus leviter productis, atticulo ultimo ad apicem 

 ipsum in globulum subito aucto, unguiculis minutis subtus munito, 

 superne e visu reconditis. 



Labrum transverse or subsinuate, rounded at the lateral margins, 

 narrower than the base of the head. 



Mandibles small, robust, concealed from above. 



Maxillary palpi (Front, fig. 3m, 5m) elongate, subincrassated ; the 

 basal joint small; the second ovate, truncate at the apex, and gra- 

 dually attenuated towards the base, the length being not quite double 

 the breadth ; the third is of the same form as, but slightly longer 

 and wider than, the second, broadly truncate at the apex; the terminal 



* pV, nasus ; re/uvw, seco. 



