82 LAMELLICORNIA. 



2 . Clypeus antice angustatus, apice obtuse truneato. Caput bicarinatum. Thorax medio antice convexo 



ibique utriuque obtuse tubereulato. 

 Long. 8-11 millim. 



Sab. Mexico, Parada (Salle), Jalapa (Hoge) ; Guatemala, San Geronimo, Cerro Zunil 

 (Champion) ; Costa Rica, Rio Sucio, Volcan de Irazu (Rogers) ; Panama, Bugaba, Volcan 

 de Chiriqui (Champion). 



The colour is a very dark indigo-blue. This species is very distinct from the others 

 of the 0. chevrolati group by the punctuation, and the peculiar lateral dentiform 

 prolongation of the posterior carina of the head in the well-developed males. I have 

 adopted the name given to the species by Chevrolat in the Salle collection. A male 

 from the Volcan de Chiriqui is figured. 



42. Ontliophagus ? 



Hab. Mexico, Jalapa (Edge). 



A single female example of a species apparently allied to 0. landolti. 



43. Onthophagus ? 



Sab. Mexico, Ciudad in Durango (Forrer). 



A single female example of a species apparently allied to, but distinct from, 

 0. nitidior. 



44. Onthophagus ? 



Sab. Mexico, Ciudad in Durango (Forrer). 



A single specimen very near 0. chevrolati, but with somewhat different punctuation. 



ONITICELLUS. 



Oniticellus, Lepeletier de Saint- Fargeau & Serville, Enc. Meth. x. p. 356 (1825); Erichson., Ins. 

 Deutschl. i. 3, p. 781; Lacordaire, Gen. Col. iii. p. 111. 



A genus distributed over the tropical and warm temperate zones of the eastern and 

 western continents, but not found in Australia or in oceanic islands. Only two species 

 have hitherto been detected in America, namely — one in the West-Indian Islands, and 

 a second in California. Forty-four species have been described. 



The remarkable new species described below, recently discovered by Herr Hoge in 

 Mexico, differs from all other known members of the genus in the armature of the 

 thorax; but as very great diversity exists in the genus in this respect as well as in 

 general form and sculpture, and as the Mexican species agrees very closely with Oniti- 

 cellus in all essential points of structure, there is no ground for treating it as a 

 separate genus. 



