326 CALIFORNIA ACADEMY OF SCIENCES. 



family in which it is here placed. The fact that the 

 tarsi are five-jointed removes it from association with 

 any but the most aberrant Cerambycid^ in the earlier 

 groups of Prionides, with which no one would pretend to 

 associate this insect. That the fourth tarsal joint is 

 small might seem an objection to its association with the 

 Rhipiceridte, but this is by no means insuperable, as in 

 an adjacent family, Dascyllidce, we have an entire group, 

 the Ptilodact3dini, so constituted. In view of the fact 

 that the family Rhipiceridaj contains but few genera not 

 requiring tribal subdivision for their elucidation, I would 

 suggest that Vesperoctenus be placed near Callirhipis, 

 from which it differs in its twelve-jointed antenna? and 

 the small fourth tarsal joint. 



Occurs at San Francisquito in the Cape Region and in 

 Mexico. 



ELATERID^. . 



Meristhus cristatus Horn. Texas. Cabo San 

 Lucas. 



Chalcolepidius rubripennis Lee. San Jose del 

 Cabo. 



Cardiophorus edwardsii Horn. Nevada, California. 

 San Pedro Martir. 



Cardiophorus tenebrosus Lee. Washington, Cali- 

 fornia, Nevada. San Pedro Martir. 



HoRisTONOTUS SIMPLEX Lec. California, Utah, Ari- 

 zona. El Taste and San Jose del Cabo. 



EsTHESopus DisPERSus Horn. Texas, Arizona, Cali- 

 fornia. San Jose del Cabo, Coral de Piedra, Sierra El 

 Taste. 



Aptopus perp:grinus Horn. Texas. El Taste. 



