262 



REVISION OF THE TENEBRIONIDvE OF AMERICA, 



genera of this group have the thorax broadest at base and equal to the elytra, while the 

 thorax in the present species is narrower at base than at apex. It cannot be referred to 

 any other genus, and this one character alone appears really too trifling to admit of the 

 formation of a new one. A single specimen collected by the expedition in Nevada, under 

 Clarence King. 



CRYPTADIUS, Leo. 



Cryptadius, Leo,., Ann. Lye. V, 140. 



Epistoma with the middle lobe produced truncate, labrum slightly prominent, entire. 

 Maxillary palpi slender, eyes subemarginate, with a distinct superciliary ridge;. Mentum 

 large, transverse, entirely filling the buccal cavity. Antennae 11-jointed, slender, slightly 

 thickened externally ; 3d joint larger. Legs slender, bicalcarate. Anterior tibia? with the 

 outer angle prolonged. Posterior coxae approximate. 



O. inflatus, Leo., Ann. Lyo. V, 140. Black, very convex head and thorax, finely punctured. Thorax short, 

 narrower anteriorly, sides rounded, . slightly margined. Elytra finely muricato-punctate. Base of antennas and feet 

 brownish. Length .88 inch. 



A single specimen was found at San Diego, and subsequently lost while being sent 

 abroad for study. No other specimens have since been found. 



AUCHMOBIUS, Lee. 



Auchmobius, Lee, Ann. Lye. V, 140. 



Epistoma with the middle lobe produced, deeply cmarginate, and with convergent 

 sides, lateral lobes broadly rounded. Labrum moderately prominent, feebly cmarginate. 

 Maxillary palpi slender, last joint broader oval. Eyes feebly cmarginate and without su- 

 perciliary ridge. Antennae with the first three joints nearly equal and longer than the 

 others ; joints 4-10, gradually increasing in breadth, slightly flattened, last joint oval, 

 acute and smaller than the preceding. Anterior tibia- with the outer angle prolonged. 

 Tarsi with spinous hairs beneath. 



This genus and the preceding have been removed from the group Thinobatini, in 

 which they were placed by Dr. Lecontc, on account of the prominence of the middle lobe 

 of the epistoma. In the tribe named, the epistoma is very broadly rounded and without 

 any undue prominence of either of the lobes, which are faintly indicated by obsolete 

 sutures. 



A. subhevis, Lee, Ann. Lye. 8, 140. 



This insect is of very robust form, broadly oval, and very convex, nearly smooth and 

 shining, with few fine punctures on the head and thorax, and rather coarse ones on 

 the elytra. It appears to occur in many parts of California, though rare everywhere. 

 Specimens occurred most abundantly in Owens' Valley, one at Tcjon, another in the 

 Southern Coast Range. It varies in size from .3-.4 inch; and one from the latter locality 

 is smoother and of a longer oval. 



