Barin/E 411 



female of spiniger the antennae are said to be inserted behind the 

 middle of the beak. 



*Conocentrinus canorus n. sp. — Smaller and narrower, deep black 

 throughout, the upper surface clothed very closely with uniform ochreous 

 scales, transverse and a little smaller and thinner on the pronotum and 

 confusedly arranged throughout the strial intervals; beak in the female 

 one-half longer than the head and prothorax, slender and nude, broadly 

 arcuate, becoming rapidly more arcuate and thickened at base, the 

 antennae inserted at three-sevenths, the basal parts finely and sparsely 

 squamulose; first funicular joint very long, the second much shorter, 

 as long as the following two, the club normal; prothorax rapidly conical, 

 with medially very feebly arcuate sides, the apex not obviously con- 

 stricted and barely three-sevenths as wide as the base, the lobe of the 

 latter small, gradually cuspidiform; punctures dense and subopaque; 

 scutellum very small, nude; elytra elongate-ogival, narrow at tip, at 

 the narrowly subprominent humeri distinctly wider than the prothorax, 

 the surface somewhat undulated, the sides subparallel and feebly sinuate 

 for a short distance behind the humeri; the subapical umbones are rather 

 prominent; striae somewhat fine but deep; under surface with rather 

 small but very close whitish scales; anterior coxae separated by a third 

 of their width. Length (9) 3.6 mm.; width 1.65 mm. Guatemala 

 (near the city). One example. 



I am unable to recall the source from which any one of the above 

 four examples was received; they have been undetermined in my 

 collection for many years. 



It is more than probable that Gerceiis tenuistriatus Chmp., also 

 belongs to this genus. 



Leptocorynus n. gen. 



The type of this proposed genus is the Mexican GercBiis aspersus 

 Chmp. (Biol. Cent.-Amer., IV, 5, p. 290). It is distinguished 

 primarily by the very elongate antennal club of the male, this 

 being always longer than the entire funicle and sometimes nearly 

 twice as long. Besides aspersus, the genus will comprise scutatus, 

 longiclava and ienuiclava of Champion, assigned originally to 

 GercBiis. 



The rather numerous genera proposed in the foregoing pages at 

 the expense of Gerceus, in the enlarged scope given it by Mr. Cham- 

 pion, are founded upon peculiarities of habitus, supplemented by 

 more or less radical differences in the structural characters of the 

 male. This method of defining genera is frequently convenient 

 in large groups, which are deficient in strongly marked structural 



