ONTHOPHAGTJS. 69 



S ■ Caput subplanum, disperse punctulatum ; clypeo elongato, apice late reflexo et sirraato ; vertice eornubus 

 duobus semicirculariter curvatis, cupreis, basi baud carina connexis. Tborax dorso antice obtuse lobatus, 

 lobo post apicem constricto. Tibia? auticse valde elongatse, curvatae ; apice intus prolongato vix reflexo, 

 penicillato. 



Long. 8g raillim. d 1 . 



Hab. Panama, San Feliz (Champion). 



8. OnthophagUS rhinolopllUS. (Tab. V. figg. 5, 8 ; ba, side view of head and 

 thorax.) 



Onthophagus rhinolophus, Harold, Ann. Soc. Ent. Fr. 1869, p. 510 \ 



Hab. Mexico, San Andres Tuxtla (Boucard 1 , in coll. Salle), Oaxaca (Edge) ; Guate- 

 mala, San Isidro (Champion) ; Panama, Volcan de Chiriqui (Champion). 



The single Guatemalan example, a female, differs in its rather more deeply-impressed 

 and more strongly-punctured striae. In the very finely, scarcely visibly, punctured 

 elytral interstices it agrees with the typical specimens. We figure a male example 

 from Tuxtla. 



9. OnthophagUS belorhillUS. (Tab. V. figg. 6, c? ; 6 a, side view of head and 

 thorax ; 7,2; 7 a, side view of head and thorax.) 



0. rhinolopho proximo affinis, a quo differt colore fusco-asneo nitido, tborace grosse punctato, elytris grosse 

 crenato-punetatis ; thorace ( 6 ) antice medio lobato, lobo longitudinaliter sulcato ; clypeo ( 6 ) sicut in 

 0. rhinolopho, late truncato et medio cornu erecto armato ; genis margine explanato-reflexo, recto, juxta 

 clypei suturam valde angulato, vertice bicornuto. $ clypeo triangulari sat elongato, apice bidentato, supra 

 punctato-rugoso, antice transversim carinata, vertice breviter bicornuto ; tborace antice medio tuberculis 

 duobus compresso-conicis. 



8 major. Cornu clypei basi gracili, apice valde et abrupte dilatato, cornubusque verticis tborace altioribus. 



S minor. Cornu clypei basi latior apice obtuso nee dilatatus ; eornubus verticis sicut in S majore. 



<$ effceminatus. Clypeo apice leviter producto, reflexo, apice emarginato ; vertice bituberculato tboraceque 

 antice medio baud lobato, bituberculato. 



2 minor. Vertex bituberculatus, thorace tuberculis obsoletis. 



Long. 5-7| millim. 



Hab. Guatemala, El Eeposo, Las Mercedes, San Isidro, Pantaleon, Zapote (Cham- 

 pion). 



Var. ? 8 minor. Yiridi-auratus, elytris cupreis, pedibus rufis. 



Hab. Nicaragua, Chontales (Janson). 



Many examples of the typical form, one only of the variety. 



This and the preceding species belong to a small group* of the genus in which both 



* This curious and beautiful little group appears to be peculiar to Tropical America. Other species 

 belonging to it are 0. dypeatas (Blanch.), Bolivia, 0. rhinophyllus (Har.), Venezuela and Colombia, and the 

 two following : — 



1. Onthophagus xanthomerus. 



Nio-er nitidus, elytris subviolaceis, sericeo-opacis, femoribus flavis ; thorace punctulato ; elytris subtiliter punctato- 

 striatis, interstitiis planis, alutaceis, punctulatis. 6 minor (?) clypeo subtriangulari, medio cornu erecto, 



