390 SUPPLEMENT. 



Onthophagus guatemalensis (p. 73). 



To the localities given, add : — Guatemala, Chimaltenango (Conradt). 



Onthophagus landolti (p. 75). 



To the localities given, add : — Mexico, Temax in North Yucutan (Gaumer). 



Onthophagus chevrolati (p. 80) 



Add:— 



Yar. 0. omiltemius. d 1 • A typo differt thoracis gibbere medio tumorem prominentem rotund atum simplicem 



efficiente. 

 Long. 11 millim. 



Hab. Mexico, Omilteme in Guerrero 8000 feet (H. H. Smith). 



Mr. Smith obtained two well-developed males and one male minor, with several females 

 of this form, which may prove to be distinct from 0. chevrolati. In the latter the 

 middle anterior protuberance of the thorax is broad and rather concave in front ; in 

 the var. omiltemius it is narrower, and forms a simple tuberiform prominence. 

 There is a distinct tubercle on the crown as in O. chevrolati ; the surface is opaque, 

 bronzed-black, with fine and sparse punctuation on the thorax. The females are of 

 the same colour, but the surface is silky and undulating ; and they are distinguishable 

 from the same sex of the following (0. undulans) only by their colour. 



39 (a). Onthophagus undulans. (Tab. XXIV. figg. 6, 6 #, 6 .) 



O. chevrolati proxime affinis, differt colore sericeo-nigro, superticie insequali sicut in O. totonicwpamo sed glabra 



et tborace sparsissime punctulato. 

 d major. Clypeus margine apicali valde reflexo medio paullo producto, angulis rotundato-productis, vertice 



simplice vel carinulato. Thorax gibbere utrinque lateraliter in dentem validum producto, lobo anteriore 



angusto subcompresso simpliei. 

 cJ minor. Clypeus fere semicircularis. Thorax gibbere minore sed lobo anteriore rotundato simplice. 

 5 . Caput bicarinatum. Thorax antice medio convexo et bituberculato. 

 Long. 8|-10 millim. 



Hab. Mexico, Omilteme 8000 feet, and Chilpancingo 4600 feet in Guerrero (H. H. 



Smith). 



41 (a). Onthophagus inflaticollis. (Tab. XXIV. figg. 7, 7 a, 6 ■, 8, $ .) 



O. chevrolati affinis ; brevis, niger, capite thoraceque politis, elytris et pygidio opacis, thorace grosse sparsim 

 punctato, elytris subtiliter punctulato-striatis interstitiis sparsissime setifero-punctulatis. Caput rugoso- 

 punctatum, genis ante oculos <5 magis $ minus rotundato-dilatatis. 



£ major. Clypeus late quadratus, concavus, margine antico medio paullo producto ; vertex flexuoso-carinatus, 

 fronte obtuse carinata. Thorax elytris paullo longior et dimidio latior, maxime convexus, margine ante 

 medium breviter alte arcuato, gibbere antice verticali utrinque angulato, lobo mediano parum producto 

 antice convexo. Tibias anticae elongatse, apice curvatse. 



c? minor. Clypeus semicircularis. Thorax gibbere minus convexo, angulis lateralibus loboque anteriore sub- 

 obsoletis. 



5 . Clypeus obtuse triangularis, apice bidentatus. Thorax gequaliter convexus. 



Long. 7-9 millim. 



