LAMELLICOENIA. 385 



the small head, strongly-punctured elytra, and facies show a closer relationship to Soranus 

 than to Veturius, in which the head is remarkably broad, and the elytra finely 

 punctulate-striate. 



PASSALUS (p. 21). 



Passalus striatopunctatus (p. 22). 



To the localities given, add :< — Mexico, Teapa in Tabasco (H. H. Smith), Temax in 

 N. Yucatan (Gaumer). 



VERKES (p. 23). 



Verres corticicola (p. 24). 



To the localities given, add: — Mexico, Teapa in Tabasco (H. H. Smith) 



CANTHON (p. 26). 



Canthon speciosus (p. 27). 



To the localities given, add : — Mexico, Teapa in Tabasco (H. H. Smith). 



Dr. Horn (Trans. Am. Ent. Soc. 1870, p. 45) gives this name as synonymous with 

 C. cyanellus, Lee, from Texas. The two species are, in fact, almost identical in form 

 and in the deeply emarginate clypeus, bispinose in the emargination, and differ only 

 in the punctuation of the upper surface, which in the Texan species is very distinct 

 though fine, imparting to the elytra a slight opacity, whilst in all Mexican examples 

 it is scarcely perceptible with a strong lens, and the whole surface is highly polished. 



Canthon enryscelis (p. 28). 



To the localities given, add : — Mexico, Atoyac in Vera Cruz, Teapa (H. H. Smith), 

 Temax in North Yucatan (Gaumer). 



Canthon viridis (p. 30). 



To the localities given, add : — Mexico, Rincon in Guerrero (H. H. Smith), Temax 

 in North Yucatan (Gaumer). 



Many specimens have lately been received from Yucatan, nearly all of the dark 

 violet form, a few only having the thorax tinged with green. 



Canthon gagatinus (p. 33). 



M. Salle has pointed out to me that this species, or its blue variety C. amethystinus, 

 Harold, is the Ateuchus humectus of Say, a name omitted by Harold and Gemminger 

 in the Munich Catalogue, and also by Harold in his monograph of the genus Canthon. 

 Dr. Horn also informs me that C. indigaceus of Leconte belongs to the same species. 

 The synonymy therefore will stand thus : — 



biol. cente.-amer., Coleopt., Vol. II. Pt. 2, December 1889. 3 DD 



