COLEOPTERA OF BAJA CALIFORNIA. 371 



Meloidae. 



Cantharis melasna Lee. Boundary of Arizona and 

 Sonora, Mexico, Santa Margarita Island. San Jose de 

 Gracias, Baja California. 



Negalius marmoratus Casey. Western Texas. San 

 Jose del Cabo. 



Mordellida?. 



Mordellistema ambusta Lee. Pennsylvania, Nevada, 

 Texas. San Jose del Cabo, San Lazaro. 



(Edemeridae. 



Some changes have been made in the generic position 

 of many of the species in this family and the reader is 

 referred to the synopsis of the family which follows this 

 contribution. 



Alloxacis nitidula n. sp. San Jose del Cabo. 



Oxacis granulata Lee. Cabo San Lucas. Was acci- 

 dentally omitted in the previous contributions. 



Oxacis fragilis n. sp. Utah, Arizona. San Jose del 

 Cabo. 



Oxacis dubiosa n. sp. San Jose del Cabo, San La- 

 zaro. 



Cossonidae. 



Cossonus sp. San Jose del Cabo. 



Brenthidae. 



Vasseletia vasseleti Boh. In noticing this species in 

 the "Biologia" Dr. Sharp seems in doubt as to the cor- 

 rectness of the locality given by Boheman. The species 

 is peculiar in appearance and unlike those usual in the 

 Mexican fauna. 



