296 Journal New York Entomological Society, t'^'o^- xxii. 



elongate, broad and very deeply, arcuately emarginate at middle. The 

 larger females have a short, broad and anteriorly truncate protuber- 

 ance at middle of prothorax in front. 



In the neighborhood of New York this species is taken occasionally 

 at the Palisades and commonly at West Point by Col. Robinson. 

 Specimens from Wisconsin and Montana in my collection indicate a 

 wide distribution. 



Onthophagus arizonensis Schaeffer. 



Schaeff., Sci. Bull. Brookl. Inst. Mus., Vol. I, p. 382. 



This species was collected by F. W. Nunnenmacher in Nogales, 

 Arizona. 



Metallic green with more or less cupreous tint on head and pro- 

 thorax, elytra pale with suture and a number of variable spots metallic 

 green, the spots more or less longitudinally and transversely confluent. 

 The clypeus is truncate at apex. The head of the male has the 

 upper carina represented by two feeble tubercles, the lower carina is 

 absent. The prothorax of the male is produced at middle into a short 

 cone-like projection. 



Onthophagus janus Panz. 



Panz., Faun. Bor. Am. Prodr., 1794, p. 5, tab. i, fig. 3. 



Horn, Trans. Am. Ent. See, Vol. V, p. 139. 



Blatchley, Col. of Ind., p. 919. 

 Onthophagus striatulus Beauv. 



Beauv., Ins. Afr. et Am., p. 92, tab. 3, fig. 5. 



Horn, Trans. Am. Ent. Soc, Vol. V, p. 139. 



Blatchley, Col. of Ind., p. 919. 



This well-known species is widely distributed in the Eastern United 

 States. 



Head and prothorax metallic green or bronze, shining; elytra less 

 shining than the prothorax, uniformly piceous with more or less 

 cupreous reflection {janus) or piceous with base and apex more or 

 less pale (striatulus). Head of male with clypeus anteriorly rounded, 

 lower carina absent, upper carina feeble and on each side produced 

 into an acute tubercle or slender horn. Prothorax produced at middle 

 into a very short, broad projection. 



Both forms janus and striatulus occur together and are connected 

 by intermediate forms. 



