TENEBRIONIDAE. 367 



it may be added that the guUir pedunclo, for tlie support of the 

 mentum, is visible, except in a few Asidiiii; the mesostenium is 

 always very short, and the wings are wanting ; tlie tarsi are 

 always channelled beneath, spinous or setose along the margin, 

 almost never pubescent. The species are all found walking on the 

 ground in desert regions. Our tribes are only the following: — 



Labrum scarcely visible ; 



Anterior tibiae broadly dilated. I. Akepsiini. 



Anterior tibise slender ; 



Tarsi pubescent beneath, spurs minute, genjie j'H'orninent. 



II. Nyctopoeixi. 

 Tarsi setose, spurs large, gense not prominent. III. Cryptoglossix!. 

 Labrum prominent, in great part visible ; 



Intercoxal process of abdomen broad, truncate ; 



Mentum large, ligula scarcely visible. IV. Asidini. 



Mentum small, liguIa lunate, exposed. V. Bkanchim. 



Intercoxal process acute, triangular. VI. Conio.nti.m. 



Tribe I.— A]\EPSII1VI. 



Body elongate, apterous; head horizontal, front hemihexagontil, 

 elypeus enuirginate at middle, labrum small, nearly concealed; 

 eyes oval, almost entirely divided by the sides of the front; 

 antenna eleven-jointed, slightly broader externally, the last joint 

 a little longer aiid narrower than the tenth, and truncate at tij); 

 mentum moderate, supported by a very short peduncle, the 

 maxilliK visible at the sides, and the ligula at tip; prosternum of 

 moderate width, not prolonged at tip, distant from the declivous 

 mesosternum; middle coxal cavities open externally, trochantin 

 distinct; metastiu'num short, side pieces njoderate, posterior coxie 

 transversely oval, separated by a triangular process of the abdo- 

 men ; first three ventral segments rather long. Elytra mirrowly 

 inflexed at base, epipleune narrow, but entire. Ijcgs moderate, 

 the tibi;i3 gradually broader to apex, and distantly spinulose ex- 

 ternally, the anterior tibia more triangular and subserrate; tibial 

 spurs distinct. Tarsi short, with short spinules beneath. 



This tribe contains, as far as known, but one species, Anepsius 

 delicatulus Lee, found in the seniidesert regions of California. 

 It is a small (4.3 mm.) insect, piceous, the elytra with rows of 

 fine punctures. 



