140 THE COCCIDAE 



heavily chitinized. — California on Bromus, Ammophila, 



Ericameria. bi-omii Ferris. 



aa. Body always with more than one pair of cerari. 



b. Anal cerari always situated upon distinct chitinized area bearing 

 numerous iricerores and auxiliary setae; antennae of adult female 

 consisting of eight segments; abdomen with two to four cerari at 

 caudal end, ceraran setae of anal cerari large and stout, of other 

 segments smaller; anal cerari surrounded by numerous tricer- 

 ores and eight to ten auxiliary setae; anal ring setae slightly long- 

 er than anal setae. — California on i^lymus. californicus Ehrh 



bb. Anal cerari never situated on chitinized area. 



c. Body with three pairs of cerari, located at caudal end; ceraran 

 setae all short and cylindrical, those of anal cerari largest; 

 antennae of adult female consisting of eight segments; anal 

 setae distinctly longer than anal ring setae. — France on Cala- 



magrostis, Sphagnum, Agropyrum, Festuca pe7-risii Sign. 



CO. Body with two pairs of cerari located at caudal end of body. 

 d. Antennae of adult female consisting of eight segments; 

 ceraran setae short, stout, conical, not accompanied by 

 grouped tricerores or auxiliary setae; dorsal setae numerous, 

 short, subequal; anal ring large and heavily chitinized; anal 

 setae slightly longer than anal ring setae. — Australia, Cali- 

 fornia on Calceolaria, Danthonia, Phormium, Cordyline, 



sugar-cane. calceolariae Mask. 



dd. Antennae of adult female consisting of seven segments; 

 ceraran setae small, conical, two in each cerarus; cerari not 

 with grouped tricerores or auxiliary setae; dorsal setae short, 

 more numerous on caudal part of body; anal ring small and 

 strongly chitinized; anal setae slightly shorter than anal 

 ring setae. — California on Festuca. fcstucac Kwn. 



Tylococcus Newst. — This genus was based upon a single species, 

 madagascariensis Newst., from Madagascar from the nests of Cremas- 

 togaster. The body is provided with cephalabiae and caudalabiae and 

 with fifteen pairs of cerari. It is questionable if the other species re- 

 ferred to this genus by Brain belong to it. 



Erium Mask. — A genus containing five species. The type, 

 globosum Mask., is from Australia on Acacia. All the other species are 

 from America, they are: armatum Hemp, from Brazil; eriogoni Ehrh. 

 from California on Eriogonum; lichtensioides Ckll. from Colorado, Cali- 

 fornia on Artemesia; and zapotlanum Ckll. from Mexico on "Huele de 

 Noche." Ferris has referred irishii Ckll. and steelii Ckll. & Towns, to 

 Pseudococcus. He describes lichtensioides Ckll. as follows: antennae 

 consisting of seven segments, anal cerari only present, consisting of ten 

 ceraran setae borne on a chitinized area without auxiliary setae; dorsum 

 of thorax and abdomen with numerous short conical setae, similar to the 

 ceraran setae. 



Lefroyia Green. — A single species, castaneae Green from Assam, 

 India on Castanea, is included. 



Rlper.siella Ckll. — This generic name was first published by Cock- 



