ART. 12. MASKELL GENERA OF COCCIDAE MORRISON. 43 



scatteied over the dorsum, these larger in the anterior portion of 

 the band, the large multilocular disk pores, occurring ventrally in 

 the abdominal region, and the short cylindrical tubular ducts, these 

 occurring rarely in or adj acent to the marginal band ; possibly with 

 tiny quinquelocular pores near the spiracle, but the structure of 

 these not determinable with certainty,; with large, lanceolate cerarian 

 spines, smaller, more slender, blunt-tipped spines in the marginal 

 band, and scattered widel^^ on the dorsum, slender tapering peglike 

 spines; with slender setae of varying sizes in tiie marginal band and 

 widely scattered on the body. 



Intermediate stages. — None available for examination. 



Larva. — Oval, slightly pointed behind, abdominal segmentation 

 distinct; antennae 6-segmented, the last much the longest; legs nor- 

 mal, claw simple, digitules normal ; mentum indistinctly 2-segmented ; 

 anterior dorsal ostioles set back well behind the anterior border of 

 the framework of the mouthparts, posterior between the fifth and 

 sixth (visible) abdominal segments; anal lobes somewhat produced, 

 short triangular, more heavily chitinized than the derm, chitinization 

 continued anteriorly beneath as a narrow strip bearing the ventral 

 setae, with a pair of large lanceolate spines above, one apical, the 

 other just before it, and a long slender, subapical ventral seta and* 

 a shorter basal one ; anal ring overlapped above by the dorsal derm, 

 open beneath, set in rather deeply between the anal lobes, cellular and 

 with six long setae, the longest extending beyond the apex of the anal 

 lobes; with two pairs of slender setae, the upper about twice the 

 length of the lower, just beneath the anal ring; upper surface with 

 trilocular pores and slender, peg-like spines, these mostly paired to- 

 gether and on the abdomen in three longitudinal rows on each half of 

 the body, the outer row marginal, the inner submedian, ventral sur- 

 face with a submedian row of slender setae, and three rows of peg- 

 like spines, similar to but longer and more slender than the dorsal 

 ones, on each half of the abdomen, the outer row nearly marginal. 



Cotype.—Ciit. No. 24761, U.S.N.M. 



The following generic diagnosis has been prepared from the pre- 

 ceding description. 



GENERIC DIAGNOSIS OF EPICOCCUS. 



Pseudococcine forms, having dorsal ostioles, triangular pores, 

 cerarii and other structures normal to that group ; adult female globu- 

 lar or nearly so, antennae 6-segmented, normal, legs normal, mentum 

 obscurely 2-segmented, only the two posterior pairs true cerarii, rest 

 represented by continuous marginal band of spines and pores, the 

 former somewhat grouped, each cerarius composed of a cluster of 

 lanceolate spines and triangular pores, the apical pair slightly chitin- 

 ized beneath, no ventral chltinous thickening, anal ring placed dors- 



