CHALEPUS. 83 
basal margin rather deeply excavated on either side. Elytra dilated from the base to 
the hinder angle, thence narrowly rounded to the apex, the latter deeply quadrate- 
-emarginate ; outer margin distinctly dilated, finely serrulate, more coarsely so posteriorly 
and on the apical border; each elytron with ten, at the base with eleven, rows of large 
punctures ; second interspace strongly costate, the sixth at its base, together with the 
anterior half of the eighth, moderately elevated. 
The cristate antenne will at once separate this species from its congeners. 
60. Chalepus deyrollei. 
Odoniota deyrollei, Chapuis, Annales de la Société Ent. de Belgique, xx. p. 8 (1877). 
Elongatus, niger; subtus nitidus, pectoris medio, femoribus anticis basi nec non abdominis limbo, fulvis aut 
tufo-fulvis ; supra subopacus; fronte antica rufo-fulvo maculata; thorace transverso, conico, lateribus 
bisinuatis, convexo, disco postico transversim excavato, rude rugoso-punctato, rufo-fulvo, lateribus vittaque 
discoidali lata, interdum antice abrupte angustata, nigris; elytris subparallelis, postice paullo ampliatis, 
apice rotundatis, serrulatis, apice serratis, angulo suturali conjunctim subangulato-emarginatis ; utrisque 
decem-, basi undecim-seriato-punctatis, interstitiis elevatis, inter se reticulatis ; interspatiis secundo valde, 
octavo modice, quarto sextoque obsolete, costatis; vitta lata laterali a basi apicem versus plus minusve 
extensa, rufo-fulva. 
Long. 33-32 lin. 
Hab. Mexico, Cordova, Puebla (Sailé). 
Vertex trisulcate; interocular space strongly produced. Antenne filiform; joints 
_cylindrical, the third equal in length to the preceding two united. Thorax transverse, 
conic; sides converging from the base to the apex, bisinuate ; subcylindrical, transversely 
excavated on the hinder disc, torulose on either side behind the middle, coarsely rugose- 
punctate, the excavated surface nearly free from punctures. Elytra subparallel, slightly 
dilated towards the apex, the latter conjointly and regularly rounded, the lateral margin 
‘serrulate, the apical border rather strongly dentate ; subnitidous; each elytron with ten, 
at the extreme base with eleven, rows of punctures, their interstices thickened, elevate- 
reticulate; the second interspace strongly, the eighth moderately, and the fourth and 
sixth, together with the suture, obsoletely costate. 
_ Separated from C. omogerus by the regularly rounded and less strongly dentate apices 
of the elytra, as well as by the slightly elevated fourth and sixth interspaces ; the 
insterstices between the punctures are also thickened and reticulate with each other. 
61. Chalepus omogerus. (Tab. III. fig. 16.) 
Odontota omogera, Crotch, Proc. Acad. Phil. 1873, p. 80’; Horn, Trans. Amer. Ent, Soc. 1883, 
p. 295% Werse 1905. DEL. | ia 
. Elongatus, postice ampliatus, niger; subtus nitidus, thoracis medio femorumque anticorum basi fulvis; supra 
opacus; thorace transverso, conico, lateribus bisinuatis, convexo, pone medium transversim excavato, 
rude rugoso-punctato, utrinque vitta velutina torulosa rufo-fulva instructo ; elytris subelongatis, postice 
ampliatis; apice subacute rotundatis, angulo suturali conjunctim, subquadratim emarginatis; margine 
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