Coleopterological Notices, VI. 623 



ni}^ cabinet by two perfectly similar specimens from the less ele- 

 vated desert regions of the extreme southern part of California, 

 whence it was originally described, and laticeps by four homo- 

 geneous examples. Functicollis is more northern in its range in 

 California. 



BOLITOPHAGINI. 



The North American genera of this tribe seem to be more con- 

 veniently divisible into primarj- groups upon the basis of anten- 

 nal structure than by the structure of the eyes, and, the occur- 

 rence of an interesting new type in the Pacific coast region, af- 

 fords an opportunity to outline their distinguishing characters as 

 follows : — 



Antennte 10-jointecl, the third much elongated, tenth perfectly free, the ninth 

 not emarglnate; eyes not divided; prothorax broadly pedunculate at base. 



Bolitotlieriis 



Antennte 11-jointed. 



Eleventh joint free, the tenth broadly arcuato-truncate at apex; eyes com- 

 pletely divided. 

 Pronotum tuberculose ; elytra with coarse interriipted ridges. 



Bolitopliagiis 



Pronotum piructate; elytra with fine continuous ridges Eleates 



Eleventh joint set partially within the emarginate apex of the tenth and in 

 close contact throughout the width ; eyes not divided. 



Mentum not cai'inate; elytra with series of tubercles Megeleates 



Mentum with a strong compressed keel; elytra with fine even ridges. 



£ledoiia 



Eledona appear^ to be of doubtful occurrence in the United 

 States, but is introduced for comparison. 



MEGELEATES n. gen. 



Body thick, subc3'lindric. Head deeply inserted, the apical 

 margin not reflexed except feebly toward the sides, continuously 

 and evenly arcuate, obtusely prominent laterally before the ej-es, 

 the latter moderately coarsely faceted and one-half divided. Max- 

 illary palpi subc3'lindric in form, the joints in close mutual con- 

 tact, polished and sparsely punctulate, the last c^dindro-conical 

 and nearly twice as long as the third. Antennal grooves beneath 

 the eyes moderately deep. Antennae with the third joint only 

 slightly elongate. Prothorax not in the least pedunculate at base. 

 Scutellum oval, truncate at base. Epipleurae horizontal, rather 



