AUT. 12. MASKELL GENERA OF COCCIDAE MORRISON. 55 



bodj^ elsewhere with scattered setae of varying lengths, both dorsally 

 and ventrall}^; these, in general, longer posteriorly and toward the 

 margin; derm with three and possibly more, distinct types of pores 

 (see figures), somewhat triangular pores, but apparently with six 

 loculi, corresponding to the usual trilocular, occurring both dorsally 

 and ventrally; relatively large multilocular disk pores also both 

 dorsal and ventral, and most abundant near posterior apex, and ver)^ 

 rarely tubular ducts; also a large quadrilocular pore, probably a 

 modified multilocular disk pore, and a very peculiar double tubular 

 duct, possibly a modification of the normal type noted ; body beneath, 

 some distance behind the posterior legs with a pair of tiny truncate 

 conical structures the exact nature and function of which can not be 

 determined. 



Immature stages. — None available. 



Cotype.—C&t. No. 24765, U.S.N.M. 



The writers have not had access to satisfactory study material of 

 any of the other species which have been placed in this genus, all of 

 which are American, and are therefore unable to comment on their 

 status with relation to the type. The following genus diagnosis ha^ 

 been prepared only from the preceding description. 



GENERIC DIAGNOSIS OF KIPERSIELLA. 



Pseudococcine forms, probably altogether root inhabiting; adult 

 female elongate oval, antennae short and stout, 6-segmented, placed 

 very close together at the apex of the body, legs stout and short, with 

 acute claw digitules and no denticle, mentum 2-segmented, two pairs 

 of dorsal ostioles present, no cerarii developed, posterior pair and 

 apical seta represented by three long setae, no specialized body spines, 

 anal ring with six setae and large, faint areolations, without the usual 

 rows of pores, derm with large multilocular disk pores, small some- 

 what triangular pores and tubular ducts, perhaps with other sorts, 

 and with slender setae. 



Genus CHAETOCOCCUS Maskell. 

 Plate 3, fig. 3. 



Genotype. — Sphaerococcus hambusae Maskell. 



Reference.— YQvn^ld, Cat. Cocc. World, 1903, p. 120. 



This genus was established by Maskell for a species he had formerly 

 included in his genus Sphaerococcus because it had been discovered 

 hy Mr. E. E. Green that the type, hcmhusae had setae on the anal 

 ring, while Maskell was of the opinion that casuarinae, the type of 

 Sphaerococcus, had no anal ring setae; actually these two type species 

 status with relation to the type. The following genus diagnosis has 

 been discussed in detail previously in this paper and elsewhere. 



