326 SERKICOENIA. 



19. Ischiodontus angustipennis. 



Ischiodontus angustipennis, Cand. Monogr. Elat. ii. p. 115 l . 



Hab. Mexico 1 (Salle, ex coll. Sturm), Tepetlapa in Guerrero (E. H. Smith). 



We have received two males and two females of this species from Tepetlapa ; the 

 males agree well with Candeze's type. It is very closely allied to /. rufulus, but is 

 considerably smaller, and has less elongate elytra and less divergent hind angles to the 

 thorax. The punctures on the head and thorax are coarse and umbilicate, the elytral 

 interstices are thickly and roughly punctured throughout. The two males in the Salle 

 collection are much darker in colour ; they have the head and thorax in great part 

 piceous and the elytra brown. 



20. Ischiodontus approximate. 



Ischiodontus approximate, Cand. Monogr. Elat. ii. p. 113 \ 

 Hab. Mexico 1 . 



There is a single ( s ) example of this species in the Janson collection, presumably 

 the type. It resembles I. tuspanus, but it has the punctures on the head and thorax 

 coarse, shallow, and umbilicate, the head flattened in front. 



21. Ischiodontus quadraticollis. 



Ischiodontus quadraticollis, Cand. Compt. Rend. Soc. Ent. Belg. 1878, p. lix (Elat. !Nouv. ii. 

 p. 12) \ 



Hab. Guatemala 1 (coll. Janson), Zapote (Champion). 



I am indebted to Dr. Candeze for the loan of his types (s 2 ) of this species, and 

 two others ( <$ ) are also before me. The insect is extremely closely allied to /. rufulus, 

 but is broader and more robust, and has the posterior coxal plates more sharply 

 angulate towards the middle. In two of the specimens the coarse umbilicate punctua- 

 tion of the thorax is very dense, and the smooth median line slightly raised. 



22. Ischiodontus badius. 



Ischiodontus badius, Cand. Monogr. Elat. ii. p. 114 \ 



Hab. Mexico, Jalapa (Edge), Tepansacualco in Oaxaca (Salle) ; British Honduras 

 (Blancaneaux) ; Guatemala, Yzabal (Salle) ; ? Nicaragua l . 



The type of I. badius, a male, is contained in the Salle collection ; it is labelled 

 ' Yzabal." This specimen has the thorax sulcate along the middle, a character pro- 

 bably due to accidental circumstances and not possessed by the other examples I refer 

 to the species. /. badius is closely allied to /. rufulus, from which it chiefly differs in 

 the smoother elytral interstices and the shorter and less divergent hind angles of the 



