Coleoptey^ological Notices. 347 



are, practically speaking, no distinct series, the elytra bear distinct 

 traces of the very feeble longitudinal impressed lines, so often 

 noticeable throughout the Epitragini. 



Undetermined Species. 



Ex. ochraceum Esch. 



The description of Mannerheim is as follows : — 



"Oblongum, pallide ochraceum, capite paulo obscuriore, thorace subcylin- 

 drico, elytris medio gibbosis posterins declivibiis, subtiliter striato-punctatis, 

 punctis basi et apice evanescentibus, interstitiis remote punctiilatis, punctis 

 subseriatis. 



"Longit. l^ lin. 



" Habitat in California ad St. Franzisco, sub lapidibus." 



If this description is correct it cannot refer to any known species 

 of Eurymetopon. The length as given indicates a very small 

 species, smaller than the smallest known specimen of Emmenastus, 

 and in the latter genus the elytral punctures, although frequently 

 feebler or evanescent near the apex, are never so to the least degree 

 toward base ; they are on the contrary almost invariably stronger 

 toward base especially near the humeri. 



EMMEXASTUS Mots. 



The genus Emmenastus, in its present scope, is one of the most 

 composite of the Tenebrionidse. The sections ma}^ be thus defined : — 



Antennae long and slender, the eighth joint always distinctly longer than 

 wide ; eyes large or moderate, sometimes prominent. 

 Tarsi sparsely clothed beneath with short spinose setae. 



Wings well developed I 



Wings completely obsolete II 



Tarsi densely clothed with long, coarse, yellow pubescence ; wings want- 

 ing Ill 



Antennae short and robust, much more compact, the eighth joint never longer 



- than wide ; wings present but extremely rudimentary ; eyes much smaller, 



never at all prominent IV 



It will be readily observed that these sections are of more than 

 usual importance, and if not generic are at least entitled to full 

 subgeneric recognition. I have not given them distinctive names, 

 however, as the very extensive Mexican contingent will probably 

 add several others, and the mutual relationship and limitation of 



