35 



number planted. After a time many were cut down and piled to sea- 

 son with bark in situ; after several months' time the logs Avere over- 

 hauled and found to be perforated in all directions by a borer. The 

 canals were filled with excrementitious matter; the subcortical farrows 

 formed a dense network over the surface of the wood, partly involving 

 the bark. Logs a foot in diameter were completely perforated. Many 

 dead and living beetles were taken from the burrows ; numerous larvas 

 were also obtained. Actual experience proved that such logs were 

 absolutely useless even for posts, as rapid decay was induced by the 

 entrance of moisture to the deeper parts. 



Besmocerufi auripemiis Chev. — Bred from the dead wood of Sambucus 

 glaucus. 



Ipoclms fasciatm Lee. — Larvte taken from the wood of Rhus integri- 

 folia at Coronado, and Rhus laurina at Poway. — I. iruhescens Casey is 

 similar in habits. 



CHRYSOMELID^. 



Lema nigrovittata G-uer, — In both the larval and iraaginal states feeds 

 upon the leaves and flowers of Datura metelo ides. The eggs are laid 

 in clusters of four to eight on the under side of the leaves. The larvae 

 cover themselves with excrement. They also feed on the cultivated 

 Datura'^ B urg mans iw, and Cestrum aurantiacum. Sinea diadema, a pre- 

 daceous Hemipteron feeds upon the larvae. 



Trirhahda luteocincta Lee. — The larvae and beetles feed upon Arti- 

 misia calif ornica. The larvae first appear in February, and after attain- 

 ing their growth descend into the ground to pupate. The first beetles 

 appear by the last of April. 



Haltica torquata Lee. — Feeds upon the leaves of the Grape-vine and 

 Adenostoma sparsifolia. 



TENEBRIONID^. 



Phloeodes diaholicics Lee. — I have taken the larvae and j)upae of this 

 species from the decaying stumps of the Live Oak. These beetles feed 

 on a large, tough species of fungus which grows upon the Oak. Once 

 I took thirty si^ecimens from one large fungus. 



Iphthimus hi'i^issimus Casey.— An immature beetle was taken from a 

 stump of a Live Oak, 



Gnathocerus cor nut us Fab. — Observed in all stages of development in 

 ground cereals of the stores. 



CALANDRID^. 



Scyphopliorus acupunctatus Gyll. — I have found this species upon the 

 trunks of grapevines at Poway; it feeds upon the sap. 



Scyphophorus yucca' Horn. — Feeds upon the sap of the Yucca whipplei 

 The larvae live within the caudex. 



