THE COCCIDAE OF SOUTHWESTERN UNITED STATES 



19 



with six longitudinal rows of short, stout, basally swollen spines 

 (Fig. 5F) instead of with slender spines. 



Fig. 5. Fonscolombia yuccae n. sp. : A, antenna of adult female; B, antenna of 

 immature female; C, tubular duct; D, spiracle of adult female; E, adult 

 female from the ventral aspect and at the left a disproportionately enlarged 

 ventral pore ; F, spine of immature female ; G, spine of adult female ; H, 

 anal ring of adult female. 



Notes : This very closely resembles F. braggi Ckll. and Rob., differing 

 chiefly in the fact that the adult female of the latter species lacks the pentagonal 

 pores in the region of the vaginal opening. Through the kindness of Professor 

 Cockerell I have been enabled to examine specimens from the type material of 

 the latter species. It should be noted that in the description of this species the 

 authors have mistakenly referred to the short, blunt spines as glands. 



This is the second species of this genus to be described from North America, 

 unless, as is quite possible, some of the species now referred to Gymnococcus 

 belong here. 



Genus DACTYLOPIUS Costa. 



The determinations of the species of this genus are based upon a 

 paper by Mr. E. E. Green 1 dealing with the genus and also upon deter- 

 minations made by Mr. Green of specimens sent to him by me. 



1 1912. Green, E. E. "On the cultivated and wild forms of cochineal insects." 

 Jn. EC. Biology, 7:79-92, pi. 1. 



