146 PALPICOENIA — SPHAERIDIIDAE. 



2, Posterior margin of thorax finely liordered on 

 eacli side. 



Oval, moderately convex. Head and thorax hlack, latter 

 reddish at sides, posterior angles ronnded ; elytra red- 

 yellow, usually with a blackish spot on disc of each. Com- 

 mon. C. nigriccps, Marsh. 



h» Interstices on elytra apparently impunctate. 



I, Elytra rather dull. 



1, Elytra chestnut-brown, gradually changing to 

 brown-red at apex ; striae indistinct behind. 



Ovate, convex. Head and thorax chestnut-brown, sides 

 of latter often lighter. L. f — 1 1. Moderately common. 



C. niinutus, Fab. 



2, Elytra black, with a rather sudden red-yellow 

 spot at apex, suture usually blackish ; striae con- 

 tinued to apex. 



Ovate, very convex. Head and thorax black; meso- 

 sternum narrower tlian in C. minvius and body more 

 narrowed behind. L. f — 1 1. Moderately common. 



C. lugutris, Payk. 



II. Elytra shiny. 



Short oval, very convex. Black, apex of elytra often 

 red-brown, striae reaching to apex. Mesosternum punc- 

 tured, oval, wider than in C. luyubris ; elytra more narrowed 

 at apex than in C. minutus. L. | — 1 1. Not very common. 



G. granariiis, Er. 



J5. Mesosternum apparently united with the metasternum. 



Ol)long-ovate, convex. Black, apex of elytra, except 

 suture, rather suddenly red-yellow, interstices punctured. 

 L. 1 1. Common, 0. analis, Payk. 



Megastermim, 



Short ovate, rather strongly convex. Black-brown or 

 brown above. Interstices of elytra more finely punctured 

 than thorax. L. 1 1. Common. 



ilf. holetophagum, Marsh. 



Sliort ovate, very convex. Black, elytra gradually pass- 

 ing into brown-red l)ehind. L. ff — 1 1. Common. 



(7. atomarium, Fab, 



