of Coleopterous Insects, 523 



Mandibulce magnae, supra concavae, subtus convexaB, crassae, 

 exliis rotundatae. 



Labium subtrapezoideum, apice subemarginatum. 



Maxillw. 



Palpi maxillares quadriarticulati : articulis primo et tertio bre- 

 vibus ; secundo sensim crassiori, extimo incrassato. 



Palpi labiates triarticulati : articulo secundo primo, et tertio 

 secundo longioribus et crassioribus. 



Antennce decemarticulatae & fere ut in Jreoda & Pelidnotd, 



Cubitus tridentatus. 



UnguicuU simplices. 



Prosternum pone pedes anticos rectum, Tertice planatura. 



Mesosternum conicum. 



This genus is nearly related to Pelidnota^ MacLeay, but the 

 mandibles are differently shaped and much thicker and stronger, 

 indicating a more substantial kind of food. The sternal processes, 

 which afford constant characters in the present and some other 

 families of P^abricius' great genus Melolontha^ are also different. 

 Mr. Hope having only a single specimen I could not examine the 

 internal edge of the mandibles and maxillae. 



Peruviana. C. 



Plate xiv. Fig. 3. 

 Long. Corp. Unc. \^. 



Uab* in Peru. 



Descr. Corpus supra glauco-viride, obscuriusculum, confiuenter 

 punctatum. Antennce ferrugineae : scapo aurato. Palpi ferru* 

 ginei. Elytra humeris & gibbbsitate anali colore viridi denu- 

 datis, punctata : punctulis minutissimis interspersis. Podex 

 apertus, punctatus. Tarsi caerulescentes. Abdomen aureo vel 

 cupreo-aureo splendore micans. Alitruncus subtus villosus. 



This beautiful species has one peculiarity which seems to dis- 

 tinguish it from all its cognate tribes — its green colour, at least on 

 its upper surface, is merely superficial, and may be remoyed by 

 friction, when only black appears. 



