436 Memoirs on the Coleoptera 



as the head and prothorax; antennae inserted at three-fifths, the outer 

 four funicular joints gradually shorter and more transverse, greatly 

 prolonged internally, the club oblong-oval, rapidly pointed, without 

 tooth, its broad base resting against the wide terminal joint of the funicle, 

 its first joint scarcely a third of the mass; prothorax small, conical, just 

 visibly wider than long, the sides oblique and feebly arcuate from base to 

 the moderate apical constriction, subsinuate medially, the apex briefly 

 subtubulate and much more than half as wide as the base, not at all 

 dentate at the sides; punctures very moderate, extremely dense through- 

 out, the median line not impunctate but finely and feebly cariniform; 

 elytra one-half longer than wide, obtusely parabolic, at the moderately 

 prominent humeri fully a third wider than the prothorax, not quite two 

 and one-half times as long; striae not coarse but very deep; intervals 

 more than three to five times as wide as the striae, finely, confusedly and 

 loosely punctate, densely on the first, the third basally and apically and 

 the fifth almost throughout; abdomen very feebly impressed and less 

 punctate subbasally, the impression inclosing an extremely minute 

 feeble tubercle. Length {d') 4.0 mm.; width 1.6 mm. Mexico (Omil- 

 teme, Guerrero), — H. H. Smith. 



Differs from creperus Boh., in its smaller size, in the absence of 

 an erect spiculiform tooth at the base of the antenna! club, in the 

 absence of a medial impunctate line on the pronotum, in the 

 relatively more elongate elytra, with alternately more punctate 

 and pubescent intervals, and, apparently also, in the relatively 

 smaller prothorax. Boheman does not allude to internally strongly 

 produced outer joints of the antennal funicle in describing creperus. 

 This is one of the forms included under creperus by Mr. Champion, 

 but it is a distinct species in many ways. 



A very constant peculiarity of the large genus Odontocorynus is 

 the densely albido-squamose scutellum, and, to less degree, the 

 adjacent basal thoracic lobe; this is in fact a generic character; in 

 sutura-fluva Chmp., the dense crust of scales extends posteriorly 

 along the entire suture, giving to that species an exceptional habitus. 



Centrinopus Csy. 

 This is a distinctly isolated genus, composed of minute squamose 

 species and differing from Centrinus, or any of the genera closely 

 allied to the latter, in having the mandibles small, feebly decussate 

 and shallowly bifurcate within. The male has a small, erect, 

 slightly curved and gradually pointed process before each anterior 

 coxa, which however sometimes becomes obsolete as in Centrinaspis . 

 The eleven species now at hand are separable as follows : 



