50 



SCALE INSECTS OF SANTA CRUZ PENINSULA 



recorded only from pine in New Mexico, but I have specimens from 

 Cupressus guadelupensis at Riverside and Libocedrus decurrens, Mt. 

 Shasta and near Yosemite Valley, Calif. 



Through the kindness of Professor Cockerell I have been enabled to 

 examine a specimen from the type material of this species. The only 

 difference observable between this specimen and those from Libocedrus 

 and Cupressus is that the median lobes of the New Mexico specimen are 

 a trifle broader. 



The following notes may be added to the original description. 



Derm entirely membranous, except for the pygidium. Tubular ducts 

 confined to the pygidium, these small, slender, varying somewhat in num- 

 ber but always few, their arrangement as indicated in the accompanying 

 figure. 



Aspidiotus densiflorae Bremner. 



Fig. 27. 



Occurring quite commonly on the leaves of the tan oak (Pasania 

 densiflora) and occasionally on the leaves of Quercus chrysolepis. 



Fig. 27. Aspidiotus densiflorce Bremner : pygidium of specimen from Pasania den- 

 siflora on the Santa Cruz Peninsula. 



I present a new figure of the pygidium. This species very closely 

 resembles A. arctostaphyli but may be distinguished by the absence of a 

 cluster of d,ucts at each lateral margin on the first abdominal segment 

 anterior to the pygidium. 



