180 CHIONASP1S SALICTS. 



genus. In C. Irasilienms the female puparium re- 

 sembles Mytilaepis, but tliat of the male is normal 

 in every respect. C. biclavis is a doubtful and ab- 

 normal species. It may be found necessary hereafter 

 to separate it from typical Chionaspis, and place it 

 in the newly erected genus Howardia of Leonardi. In 

 the present arrangement I have thought it advisable 

 to retain it in this genus, and in doing so have followed 

 Mr. E. E. Green.* 



SYNOPSIS OF SPECIES. 



A. Pygidium with five groups of circumgenital 



glands. 



a. Puparium of female white. 



(i) . . . SAUCIS. 



b. Puparium of female brown. 



(n) .... ASPIDISTIWR. 



B. Pygidium without grouped glands. 



a. Puparium formed beneath epidermal layer of 

 branch or leaf. 



(in) .... BICLAVIS. 



CHIONASPIS SALICIS (Linnaeus). 



(PL XIX, figs. 19 ; PL XXII, fig. 1 ; 

 PL XXVII, fig. 2.) 



Coccus salicis, Linnaeus; Syst. Nat., X, vol. i, p. 



456, 1758. 

 Coccus saliceti, Ratzeburg; Forst. Ins., vol. iii, 



p. 195, 1844. 



Aspidiotus salicifex, Amyot (Cooley); Monom., p. 480, 

 1847. 



* ' Coccidse of Ceylon,' p. 153, 



