of the Species of the Genus Pachyrhynchus. 323 



metallic lines so disposed that each elytron is divided into nine 

 subequal polygonal areas, besides which there are two areas 

 which are common to the two elytra, one on the suture near the 

 base and the other subapical. 



Sp. 20. Pachyrhynchus rugicollis, Waterh. 



Ater ; thorace distincte rugoso-punctato, punctis squamis viri- 

 dibus ornatis ; elytris rufo-piceis, vel piceis, leviter punctato- 

 striatis, et ad apicem quasi squamis viridibus pulverulentis. 



About equal in size to P. moniUferus. The elytra are very 

 globose in this species, usually of a pitchy-red colour, but some- 

 times nearly black ; they have rows of very small punctures. 

 The rostrum has a small but deepish triangular fovea. 



Sp. 21. Pachyrhynchus moniUferus, Esch. 



Sp. 22. Pachyrhynchus chlorolineatus, Waterh. 



Ater ; thorace in medio lined transversa, et pone banc linea lon- 

 gitudinali ; elytris linea transvers4 centrali, lineis duabus lon- 

 gitudinalibus, et linea marginali, his viridibus, nonnunquam 

 splendid^ aureo, vel cupreo-viridibus. 



Long. Corp. 6 lin. 



In size and form this species closely resembles the P. moniU- 

 ferus ; but upon placing a number of specimens of each side by 

 side, it is evident that the P. moniUferus generally has the elytra 

 rather shorter and more globose ; some specimens however could 

 not be distinguished in this respect from P. chloroUnealus, the 

 markings of which are not broken up into dots. In certain 

 situations all the specimens o( chloroUneatus had the slender green 

 lines, with which they are adorned, quite destitute of metallic 

 lustre ; whilst in other localities the specimens were all marked 

 with brilliant metallic lines, generally of a golden green colour, 

 and sometimes having a coppery hue. I do not find any specimens 

 which perfectly link these varieties ; but in P. orbifer there is a 

 similar difference in the colouring of specimens from different 

 situations, and there are intermediate varieties. 



Sp. 23. Pachyrhynchus orbifer, Waterh. 



Niger ; thorace in medio fascid transversa, et pone banc plagd 

 longitudinali a transversa usque ad marginem posticum 

 thoracis excurrente, his e squamis casruleo-viridibus effectis ; 



