Coleopterological Notice?, IV. 577 



abruptly narrowed near the apex, the punctures fine, extremely dense 

 and longitudinally subconfluent ; vestiture uniform, ochreous, the squam- 

 ules slender 24 falSUS 



Subgenus X. 

 Odontocorynus Schonh. 



Group I. 

 Beak nearly similar in form in the male and female. 

 Antennae inserted beyond apical third in the male and at apical two-fifths in 

 the female ; body rhomboid-oval, sparsely squamose, more or less rufes- 

 cent in the female, the male black 25 scutelluill-album 



Group 2. 

 Beak compressed, strongly punctate and abruptly bent near the base in the male, but 



cylindrical, polished, almost impunctate and more evenly arcuate in the female. 

 Squamules borne by the strial punctures of the elytra inconspicuous. 

 Pronotal punctures larger, distinct, close but not densely crowded. 



Larger species, the antennal club robust ; punctures of the elytral inter- 

 vals coarse and rounded, distinctly defined, each deeply enclosing a 



small white scale 26 deiiticoniis 



Smaller species, less robust and more parallel, the antennal club smaller ; 



interstitial punctures closer and confused 27 salebrosilS 



Pronotal punctures small, extremely densely crowded ; antennae rufescent, 



the club large and robust ; body broadly oblong 28 pinguescens 



Squamules borne by the strial punctures broad and distinct. 



29 pulverulentus 



The identity of subgenus "X" with Odontocorynus Sch., is in- 

 ferred from the description given by Lacordaire. We have no 

 species in which the antennal joints four to seven are internally 

 spinose, but several in which the two or three outer joints of the 

 funicle are slightly prolonged and acuminate within. The Mexican 

 Centrinus larvatus and tonsilis of Boheman, also belong to this 

 subgenus without doubt. 



I. 



1 Centrinus punctirostris Lee. — Proc. Am. Phil. Soc, XV, p. 309. 



Very robust, oval, convex, piceous-black, the elytra, beak, antennas 

 and legs more or less rufescent ; vestiture consisting of large whitish 

 scales, denser toward the sides of the pronotum and also, to some 

 extent, on the wider of the elytral intervals, giving a subvittate 

 appearance ; under surface densely squamose. Beak decidedly thick, 

 moderately arcuate, about as long as the head and prothorax, rather 

 coarsely, deeply punctured, but densely and rugulosely so only at 



