114 THE COCCIDAE 



SPECIES OF ARCTORTHEZIA 



a. Mesal plates small and not extending beyond caudal margin of their 

 segment and not overlapping mesal plates of next segment. Green- 

 land, Lapland, Norway, Scotland, England, Ireland from Saxifraga, 



grass. cataphracta Shaw. 



aa. Mesal plates large and extending beyond caudal margin of their 

 segment and overlapping mesal plate of next segment. Colorado, New 

 Mexico from nests of ants. occidentalis Dougl. 



Newsteadia Green. This genus contains a single species, floccosa 

 De Geer, found in British Isles, Germany, Bohemia, and Australia on 

 grasses and sedges. There are seven mesal plates, of which the inter- 

 mediate are the longest, and four lateral plates. The caudal lateral 

 plates are fused to the ovisac. The Australian specimens were found 

 upon some wet timbers in a mine at a depth of three hundred feet and 

 were identified by Green. This species in common with some others is 

 often collected among moss, lichens, and dead leaves and it is possible 

 that they may feed upon the two former. Whether the species was intro- 

 duced into Australia on the timbers is not known. 



Ortheziola Sulc. This genus contains three species, fodiens 

 Giard from Guadeloupe on the roots of the coffee tree; signoreti Haller 

 from France; and vejdovskyi Sulc from Prague from under leaves and 

 moss. This latter species, the type, has the dorsal aspect completely 

 covered with plates of wax. 



Nipponorthezia Kuwana. A single species, ardisiae Kuwana, 

 from Japan on Ardisia is included. The dorsum is almost naked due to 

 the small size of the dorsal plates. The third antennal segment is as 

 long as the other two together. Each ocellana is located distant from the 

 articulation of an antenna which is unusual. 



