TO 1889."'] PROCEEDINGS OF THE NATIONAL MUSEUM. 187 



Eleodes quadricollis Escli. 



Thirty-seven specimens. St. Margarita Island. Occurs also abund- 

 antly in Southern California. 



Eleodes militaris Horn. 

 Eleodes dentipes Escb. 

 Eleodes acuticauda Lee. 



Fragments of these three species found at Balleuas Bay. 



Cryptoglossa sp. ? 



Fragments. Balleuas Bay. 



Cerenopus costulatus Horn. 



A female and fragments of another specimen of this rare species 

 found at Balleuas Bay. 



Argoporis, now species. 



Six specimens. St. Margarita Island. 



Family MELOID^. 

 Tegrodera erosa Lee. 



Four specimens. St. Margarita Island. A species well known from 

 Southern California. 



Family CERAMBYCID^E. 

 Megaderus stigma Lin. 



One specimen. Panama. 



ORTHOPTERA. 



Family ACRIDIID/E. 



Schistocerca vaga Scudd. 

 A single female specimen from Balleuas Bay belongs here. 



Thrincus californicus Tbos. 



A single pupa of this species is contained in the collection from Cer- 

 ros Island. 



Five specimens of a rather large Acridiid were collected at Cerros 

 Island. This insect is a rather peculiar one, since from its general ap- 

 pearance it can easily be mistaken for one of the ffidipodince. A casual 

 glance will, however, be sufficient to show its relationship with the 

 Rhomaleans on the one side and the Truxalids on the other. It is one of 

 comprehensive forms sometimes met with among insects. The strongly 

 spined prosternum forbids its beiug placed either with the (Edipodince 

 or Truxalince, while the structure of the pronotum gives its place with 

 the Tropidinotians. It may be new, but from want of the proper refer- 

 ence-books I refrain from describing it as such. 



