AN ANNOTATED LIST OF GENERIC NAVIES OF THE COCCOIDEA 205 



Xenococcus Silvestri, 1924, Indian Mus. Rec. 26 : 311-312. 



ttpe-species : Xenococcus annandalei Silvestri, 1924, by original designation 

 and monotypy. 



The author suggested similarity to Orthezinella Silvestri in the Ortheziinae. 

 Balachowsky, 1957a : 163, suggested that the affinities of this peculiar genus lie 

 with the Erioeoecini rather than the Ortheziinae. Hoy, 1963, New Zeal. Dept. 

 Sci. and Indus. Res. Bui. 150: 15, rejected its placement in the Eriococcidae. 



Xenolecanium Takahashi, 1942, Formosa Govt. Agr. Res. Inst. Dept. 

 Agr. Rpt. 81 : 26-27. 



type-species: Xenolecanium mangiferae Takahashi, 1942, by original des- 

 ignation and monotypy. 



The author noted a relation to Meconium Morrison, Coccidae (str.). 



Xerococcus Ferris, 1921, Stanford Univ. Pubs., Univ. Ser., Biol. Sci. 



1:80. 



type-species : Xerococcus fouquieriae Ferris, 1921, by original designation 

 and monotypy. 



The author noted the wide divergence of this genus from the usual eriococcine 

 type, yet believed that it belonged to the Eriococcus Targioni-Tozzetti group 

 (Dactylopiidae, sens. str.). Hoy, 1963, New Zeal. Dept. Sci. and Indus. Res. Bui. 

 150: 15, accepted its assignment to the Eriococcidae. 



Xerophilaspis Cockerell, 1897, U.S. Dept. Agr., Div. Ent.. Tech. Ser. 

 6:14. 



type- specie s : Aspidiotus prosopidis Cockerell, 1895, by original designation 

 and monotypy. 



The author presented this as a subgenus of Aspidiotus Bouche. Ferris, 1921b : 

 94, placed the genus in the Diaspidini, rejecting the MacGillivray, 1921: 395, 

 assignment to the Aspidiotini. 



Xiphuraspis Borchsenius and Williams, 1963, Brit. Mus. (Nat. Hist.) 

 Ent. Bui. 13:370,372,375. 



type-species: Chionaspis spiculata Green, 1919, by original designation and 

 monotypy. 



The authors placed this genus in the Diaspidini, allied to Kuicaiwspus 

 MacGillivray. 



Xylococculus Morrison, 1927, Biol. Soc. Wash. Proc. 40 : 101. 



type-species: Xylococcus betulae Pergande, 1898, by original designation 

 and monotypy. 



The author established this genus for the reception of the North American 

 species that had previously been placed in Xylococcus Low. See Ferris, 1919b : 

 108-113, for comments on the validity of the included species. 



