302 COLEOPTERA OF NORTH AMERICA. 



Prothorax with lateral spine, but no dorsal callosities, elytra and thighs 

 spinose at tip ; episterna of metathorax wider in front, scent pores dis- 

 tinct. CHION. 

 b. Scutellum rounded behind ; 



* Femora not strongly clubbed ; antennae not carinated ; 

 Elytra with ivory spots, prothorax with dorsal callosities, and usually with 

 lateral spines ; elytra and thighs either spinose or unarmed ; scent 

 pores distinct ; antennae unarmed. EBUKIA. 



Elytra without ivory spots, antennae usually spinose ; 



Episterna of metathorax narrower behind, antennae with sensitive spaces. 



ROMALEUM. 



Episterna of metathorax parallel; antennae without sensitive spaces. 



ELAPHIDION. 



** Antennae carinated, femora not strongly clubbed ; 

 Antennae slender. ANEFLUS. 



Antennae stoat, joints excavated beneath. EDSTROMA. 



*** Femora strongly clubbed. 



Antenna bisulcate. TYLONOTCS. 



Antennae not sulcate. ZAMODES. 



Hammaticherus is represented by H. mexicanus Thomson, 

 which occurs in Lower California. 



Axestinus is allied to Xestia, but is clothed with fine gray 

 pubescence ; the species A. obscurus is of large size (30 mill.), 

 and occurs in New Mexico. 



To Stromatium I would refer Anoplium pubescens Hald., it 

 belongs to the division of the genus without pubescent spaces on 

 the prothorax of the $ ; the disk is, however, more finely 

 punctured in that sex than in the 9 , just as in Romaleum. 



Osmidus contains an elongate species from Lower California, 

 resembling in appearance Hesperophanes, and like many of the 

 species of that genus, finely and densely pubescent, with round 

 denuded slightly elevated spots on the elytra; the absence of the 

 deep frontal suture seen in the neighboring genera is a remark- 

 able character. 



Romaleum White has distinct sensitive spaces on the antennae, 

 especially well marked in the 9, commencing in a small depres- 

 sion on the outer face of the 4th joint. It contains all of our large 

 species of Elaphidion, except protensum, which has carinated an- 

 tennae and tibiae, and belongs to the genus Aneflus. The typical 

 species of Romaleum is Enaphalodes simplicicollia Hald. (Elaph. 

 pulverulentum Hald., nee De Geer). It corresponds with Hyper- 

 mallus Lac. in part, but I have replaced the greater number of 



