140 THE COCCIDAE 



heavily chitinized. California on Bromus, Ammophila, 



Ericameria. bromii Ferris. 



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



b. Anal cerari always situated upon distinct chitinized area bearing 

 numerous tricerores 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 Elymus. califomicus 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 permit Sign. 



cc. 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. festucae 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. 



I^efroyia Green. A single species, castaneae Green from Assam, 

 India on Castanea, is included. 



Ripersiella Ckll. This generic name was first published by Cock- 



