78 Journal New York Entomological Society. [VoL xi. 



feranim var. shastce, Lake Co.; Diaspis cameli, Stanford arbore- 

 tum. 



Cupressjis inacnabiana Murr. Macnab Cypress. — Dactylopius dudleyi, 

 near Clear Creek (four and one half miles west of Shasta P. O.), 

 Shasta Co.; Aspidiotus coniferarum var. shastce, same locality as 

 above. 



Ttimion californicnm (ToRR.) Greene. California Torreya. — Chio- 

 naspis pinifolia, Stevens Creek and Blue Lake, Lake Co.; Pheria- 

 coccus, sp., Stevens Creek (Ehrhorn); Lecanium olece, Stanford 

 arboretum. 



Cultivated Exotic Species. 



Pinus strobiis Linn. White Pine. — Chionaspis pmifolia, Stanford 

 arboretum; Aspidiotus calif orniciis, Stanford arboretum. 



Picea abies. Norway Spruce. — Chionaspis pinifolia, Cedro Place, 

 Stanford University ; Lecanium hesperidum, same locality, as 

 above. 



Thuya orientalis. — Diaspis carueli, Stanford arboretum. 



Ju7iiperus conwiunis Linn. Dwarf Juniper. — Diaspis cameli, Stanford 

 arboretum. 



Sciadopitys verticellata. Parasol Fir. — Mytilaspis newsteadi, Camp- 

 bell Place, near Stanford University. 



Araucaria excelsior. Norfolk Island Pine. — Ef-iococcus araucarics, 

 Hopkins Place, near Menlo Park. 



Notes on Economic Status. 



The following brief notes on the distribution, abundance and in- 

 jurious effects of the coniferous Coccidse may be of interest : 



It is evident from a study of the records that Chionaspis pinifolia 

 is the most cosmopolitan species, /. e., is found on a greater number 

 of species of conifers, is more generally distributed and is found at a 

 greater range of altitude (sea level to 7,000 feet) than any other spe- 

 cies. It occurs in such numbers, along with Physokermes insignicola, 

 on the Monterey pine (Pini/s insignis), on the Stanford Ranch, as to 

 be very injurious to the trees ; indeed these trees are slowly dying, the 

 needles first turning yellow, finally dying and dropping off. It is 

 very abundant on almost all species of conifers infested by them, 

 especially where the trees are on a dry hillside or in a hot interior 

 valley, and in several instances I thought them to be very injurious. 



