128 



REPORT UPON A COLLECTION OF 



Notes: This species is certainly very close to A. coursetiae Marlatt, from 

 northwestern Mexico, and A. covilleae Ferris (which is perhaps a synonym of 

 coursetiae) from Arizona. It differs from both in the complete absence of para- 

 genital pores. It is not impossible that the examination of a large enough series 

 would show an intergradation in this respect as coursetiae is described as having 

 the number of pores in each group very small. 



Aspidiotus rapax Comst. 



Previous records. A cosmopolitan species on innumerable hosts. 



Lower California records. From Rhus laurina at Ensenada; Pith- 

 ecolobium dulce ("guamuchil") at Miraflores ; Heteromeles arbutifolia 

 and Arbutus peninsularis at La Laguna. 



Aspidiotus spinosus Comst. 



Fig. 49. 



Previous records. A greenhouse species, previously recorded from 

 Washington, D. C., and from England. 



Lower California records. From cultivated grape and asparagus 

 fern at La Paz. 



Fig. 49. Aspidiotus spinosus Comst.: pygidium of specimen from grape at La Paz. 



Notes : This determination has been confirmed by Mr. Morrison, who has 

 compared specimens with the type. I present a figure of the pygidium. 



