 166 ) 



To. Callichroma concentricale ^>. hdv. 



<??. C. a/'ium (L.) simillimuiu, scd differt colore supra obscuriore, infra fortius 

 anrato, alKlornine dciisiter bnumco-sericante ; jirDthorace plicaturis disci curvatis, 

 anticis couceutricalibiis. 



Long. 22 mm., elvtr. 14^, lat. 5. 



Prothorax less oolden and shining tlian in C. afrum (L.), elytra darker, their 

 pimctnation a little stronger, the nnder surface — especial!}' of the abdomen — more 

 golden than in C. of rum, and very densely clothed with a rather long silky brown 

 pubescence. The wrinkling of the prothorax is of a peculiar form. The whole of the 

 disc is densely transversely plicate, the wrinkles almost straight at the front margin, 

 and close to the basal constriction ; the remaining wrinkles concentrically sur- 

 rounding two small tubercles behind the anterior constriction. Of these wrinkles 

 the innermost are circular, the external becoming more and more elliptic. In 

 C afrum (L.) the wrinkles are all transverse, even those behind the anterior 

 constriction. As I have been able to examine about one hundred specimens of 

 C roncentrirale, all of them having the same structure of the jirothorax, T have 

 no doubt that G. concentricale is a distinct species. 

 Hab. Knilu (A. Mocquerys, 1892) and Loanda. 



Kuilu. 



Kuilu, Gabonn. 



r6. Calliclu'oma chrysogramma C'hevr. 

 77. Callichroma piliventris Bates. 



78. Callichroma socius sp. uov. 



? . C. aureo-viride. Genis ante oculos pauce punctulatis ; fronte sparsatim 

 punctnlata, antice depressa et transverse rugata : antennis uigris, scajjo fere cylin- 

 drico, rngoso-punctato. Prothorace valde dentato, ante dentem plicatnia distincta 

 iustructo, biconstricto, lateribus lacvibns, supra ad raarginem anticum transverse 

 plicato ; disco medio parum plauato, postice utrinque elevato, verticaliter declivi 

 ad coustrictionem basalem, obsolete transverse rugose, medio jiunctulato-ruguloso, 

 pube nigra sparsa vestito, linea media glabra antice laeviter imjiressa, basi fortiter 

 unicariuata. Scutello triangulare, sparsim rngoso-punctato : elytris j)ulie nigra, ad 

 suturam tlava, vestitis, minutissime densiter ruguloso-punctulatis, juxta scutellum 

 spatio glabro rngoso. Infra subtiliter griseo-pubescens, abdomine sparsis pilis 

 longis ; pedibus nigris, femoriun medio rufis. 



Long. 24 mm., elytr. 16, lat. 5^. 



This is one of the species whicii are allied to C. pilicentris Bates, in having 

 the middle of the black femora rufous and the abilomen — besides the usual tine and 

 short pubescence — clothed with longer hairs. The shape of the prothorax is nearly 

 like that of (J. aj'ram (L.) ; the hind part of the disc is elevated, forming a fold 

 at each side close to the basal constriction ; this fold is vertical iinsteriorly. 



Hah. Cameroons (2 ? ). 



79. Callichroma cranchi Wiiite. 

 Kuilu and Loanda. 



