Coleopterological Notices, VI. 651 



joint of the posterior tarsi scarcely as long as the remainder, the 

 third short. Mesosternum expanded in a broad, highly polished 

 impunctate and glabrons plate, its outline at the sides rounded 

 and not furnished with long seta^, the episternum tumid, visible 

 from above, discontinuous in level with the met-episternum, the 

 iiies-epimeron ver3" narrow and subobsolete. 



The type is Anthicus tenuis of LeConte (Ann. Lye, N. Y., Y, 

 p. 153), ver}^ abundant in the desert regions from western Texas to 

 southern California. The male has the fifth ventral much longer 

 than the preceding, rather strongly rounded at apex and unmodi- 

 fied, the sixth or genital segment coriaceous, emarginate in the 

 middle at apex, the copulatory spicule abruptly narrowed and 

 prolonged for a short distance at apex. 



MALPORl'S n. gen. 



In this genus the head is more strongly and circularl}' rounded 

 behind than in Lappus, and the sculpture and vestiture of the body 

 are peculiar, the elytra being ver3^ coarsely and unequally punc- 

 tate and bristling with long erect tactile setse. The last joint of 

 the maxillarj' palpi is moderate in size, and ver^- different from 

 the form occurring in the genus Lappus. Our species ma}^ be 

 distinguished thus : — 



Elytra! puuctures distinct throughout the disk, though fine and remote toward 

 apex, closer and. coarse before the middle; posterior part of the disk but 

 slightly convex in profile; elytra but slightly narrowed toward base. 



Prothorax very strongly constricted; body throughout more s^sarsely punc- 

 tate, the elytra without an apical pale spot 1. foi'inicarilis 



Prothorax much less strongly constricted; punctures throughout denser; 

 elytra more parallel, the pale fascia less basal, each having an apical pale 



spot; antennje longer and more slender 2. ciiictlis 



Elytra devoid of distinct punctuation, except in the subbasal impression 

 which is strong. 



Elytra elongate, the pronotum not impressed 3. properus 



Elytra much shorter and more strongly convex in profile, the pronotum 

 feebly impressed along the median line 4. blaildtis 



The corneous copulatory sheath of the male is elaboratel3' modi- 

 fied in this genus as described below, the efferent duct lying in a 

 cavit}' of the under surface. In comparing this structure, which 

 is the prevailing type throughout the Anthicini, with the pro- 

 jecting " spike " which I have previously noted in Hymenorus 

 (Col. Not. Ill, pp. 70, 89), the homology seems to be evident, 



