78 LAMELLICOENIA. 



29. OnthophagUS gazellinus. (Tab. V. figg. 25, <s; 25 a, side view of head 

 and thorax.) 



0. gazelles (Fabr.) quoad formam et colores similis ; sed differt capite S inermi etc. Subrotundatus, supra glaber, 

 subtus sparsim setosus ; fulvo-testaceus, capite thoraceque disco aeneo-fuscis, elytris fusco-irroratis, subtus 

 metasterno medio aeneo ; thorace toto aequaliter punctulato ; elytris crenato-striatis, interstitiis planis et 

 sparsim punctulatis ; pygidio sat grosse setifero-punctato. 



c? . Caput laeve, inerme, margine reflexo ; clypeo obtuso truncato ; genis dilatatis, subrotundatis. Thorax antice 

 verticalis et obtuse quadri-tuberculatus, tuberculis duobus medianis minus elevatis et obtusioribus. Tibiae 

 anticae valde elongatae ; apice intus recte et louge acuminato-producto, longe penicillato. 



$ . Caput bicarinatum, confertim puuctulatum, antice rugulosum ; clypeo semiovato, margine reflexo ; genis 



mediocriter rotundatis. Thorace sicut in c? . 

 Long. 9-12 millim. 



Hab. Nicakagua, Chontales (Belt, Janson). 



An insect strikingly different in appearance from all other known American forms 

 of the genus, and much resembling 0. gazella, a common species in Tropical and 

 Subtropical Africa and Asia. Its true affinities, however, are not with 0. gazella, but 

 with 0. landolti and 0. chryses. 



30. Onthophagus rufescens. (Tab. vi. fig. l, $ .) 



Oblongus, convexus, rufo-fuscus, plus minusve cupreo-metallicus interdum seneo-piceus, dense breviter setosus et 

 undique confertim punctatus ; capite (genis paullulum rotundato-dilatatis) crebre punctulato ; tborace 

 convexo, antice c? $ subverticaliter declivi, grosse punctato, punctis minoribus intermixtis; elytris 

 crenato-striatis, interstitiis plerumque biseriatim setifero-punctatis et subconvexis. 



3 . Clypeus antice paullo angustatus margineque reflexo subsinuato ; frons inermis. Thorax magnus, cuboidalis, 

 medio antice valide uni-tuberculata. 



c? minor. Vertex breviter carinata. Thoracis tuberculo obtuso. 



2 . Clypeus obtuse rotundatus ; vertex carinata, fronte carina obsoletissima. Thorax antice inermis. 



Long. 5-6 J millim. 



Hah. Mexico, Guanajuato (Buges, in coll. SalU), Guadalajara, Tupataro, Matamoros 

 Izucar (Hbge). 



I have adopted the name given to this species by Duges in the Salle collection. 



31. OnthophagUS COrroSUS. (Tab. VI. figg. 2, e ; 2 a, side view of head and 

 thorax.) 



JMigineo-niger, antice cuprascens, sericeo-opacus, erecte setosus ; thorace punctulis annuliformibus confertim 

 impresso quorum nonnullis setam rigidam emittentibus ; elytris subtiliter punctulato-striatis, interstitiis 

 planissimis, eleganter alutaceis plerumque biseriatim setifero-punctatis ; pygidio annulato-punctato. 



{J . Caput breve, margine sexies flexuoso ; clypeo reflexo ; carina verticis antice valde arcuata, elevata. Thorax 

 antice late quadrato-gibbosus, gibbere margine antico fere recto tuberculoque conico prope angulos anticos. 

 Tibiae anticae attenuatae ; apice recto truncato, penicillato. 

 5 . Caput margine parum flexuoso ; clypeo distinctius bidentato, supra ruguloso ; carina anteriore recta, carina 

 verticis minus arcuata, antice ab carina frontali sat remote. Thorax antice parum convexus, prope marginem 

 anticum carina obtusa leviter arcuata. Tibiae anticae apice oblique truncato. 



Long. 5-5| millim. 



Hab. Mexico, Cordova, Orizaba (Salle). 



