306 COLEOPTERA OP NORTH AMERICA. 



Eyes coarsely granulated ; 



Prothorax much narrowed behind. PHYTON. 



Prothorax equally narrowed before and behind, tuberculate at the 



sides. OBRIUM. 



Eyes very finely granulated ; prothorax with dorsal and lateral tubercles ; 

 Punctures fine, flying hairs sparse. HYBODERA. 



uuctures coarse, flying hairs long, numerous. 

 Mesosternum wide. PILEMA. 



Mesosternum narrow. MEGOBRIUM. 



To Callimus I would refer G. chalybeus Lee., a small highly 

 polished blue species from California, with the elytra sparsely 

 punctured, and the front thighs sometimes yellow. 



Phyton contains Callidium pallidum Say, from the Atlantic 

 States. Obrium has two species in the Atlantic States. 



Eumichthus oedipus Lee., is a small species from Vancouver, 

 dark brown, finely punctured and pubescent, with two narrow 

 einereous elytral bands, between which the color is darker. The 

 first two joints of the tarsi are swollen. 



Hybodera tuberculata, from California and Vancouver, of 

 brown colofpwTEh a large basal patch, and posterior transverse 

 band of pale sericeous pubescence. Besides the sculpture, it dif- 

 fers from Cartallum by the prothorax having four discoidal tuber- 

 cles, and a smaller medial one. 



Pilema contains two species from California. They resemble 

 very much the European Cartallum ebulinum, but apart from the 

 specific differences in color they have the last joint of the palpi 

 quite cylindrical, and the mesosternum very wide. 



Megobrium Edwardsii Lee. is a Californian species, 12 mm. 

 long, of a testaceous color, with the punctures of the elytra sparse, 

 arranged in rows near the base, obsolete behind the middle. 



Lacordaire mentions that the front coxal cavities of Cartallum 

 are not at all angulated externally ; I find on repeated examina- 

 tion that they are quite as much so as in the genera with which 

 I have associated it, though the coxal fissure is not as widely 

 open as in the next tribe. 



Group II. Stenopteri. 



A group characterized by the front coxal cavities being widely 

 angulated externally, but entirely closed behind, and the abdomen 

 normal in both sexes. The head is porrect, the front large and 

 oblique, with the labrum prominent, the epistoma not separated ; 



