CLASSIFICATION OF THE COCCID^. 259 



distinctly segmented ; no digitules on claw nor on tarsus ; mouth 

 wanting in adult ; anal tube absent." (Kuwana.) 



Species. — S. quercus, Kuwana, Japan. 



Xylococcus, Loew. 



Xylococcus, Loew, Verhandl. d. k.k. Zool.-Bot. Ges. xxxii. 

 (1882), p. 271 ; Pergande, Bull. 18, n.s., Div. Ent. Dep. Agric. 

 (1898), p. 18. Tj^e,Jiliferus. 



5 . Antennae 9-jointed ; legs well-developed ; mouth absent ; 

 digitules present, but without knobs. In all stages between larva and 

 adult the mouth is present, and the legs and antennte are absent. 



(^ . With an abdominal brush. Arboreal insects, living on Tilia, 

 Betula, and Quercus. 



Species. — X.filiferus, Loew, Central Europe ; X. betulce, Per- 

 gande, North America ; X. quercus, Ehrhorn, California. 



Ortheziin^. 

 Orthezia, Bosc. 



Orthezia, Bosc, Journ. de Phys. xxiv. (1784), p. 171 ; Louns- 

 bury, 32nd Ann. Fiep. Mass. Agr. College. Type, characias 

 {^=urticce). 



Cyphoma, Gistel, Nat. des Thier. (1848), p 151. Type, cha- 

 racias (not Cyphoma, Bolt. 1798). 



? . Body compact, short, more or less covered with waxy white 

 lamellffi ; a more or less elongated ovisac of firm texture ; legs long 

 and well-developed ; antenna3 8- (rarely 7- or 9-) jointed ; mouth well- 

 developed. 



S- . Eyes compound ; abdomen with a caudal brush. 



Species. — 0. cataphracta, Shaw, Northern Europe, Siberia, 

 Greenland ; 0. urticce, Linne, Europe ; O. delavauxi, Thieb., 

 Europe ; O.floccosa, DeGeer, Europe; 0. mcenariensis, Douglas, 

 Italy. 



0. occidentalis, Douglas, Colorado, New Mexico ; O. aniice, 

 Ckll., New Mexico, &c. ; 0. nigrocincta, CklL, New Mexico ; O. 

 sonorensis, Ckll., Mexico; 0. artemisice, Ckll., New Mexico ; 0. 

 garryce, Ckll., New Mexico ; 0. monticola, Ckll., New Mexico ; 

 O. cheilanthi, Tinsley, New Mexico ; 0. graminis, Tinsley, New 

 Mexico ; 0. lasiorum, Ckll., New Mexico. 



0. insignis, Douglas, Tropics of the New World, Ceylon ; 0. 

 prcelonga, Douglas, Tropics of the New World ; 0. ultima, Ckll., 

 Argentine Eepublic. 



Section Arctorthezia, Ckll. Waxy secretion dense, not easily 

 removed ; wedge-shaped lamellae in dorsal line. Boreal types. 

 O. occidentalis (type of section),' 0. cataphracta. 



Ortheziola, Sulc. 

 Ortheziola, Sulc, SB. Bohmisch. Ges. 1894, p. 5. 

 ? . Similar to Orthezia, but antennae 4 -jointed. 



