666 The Philippine Journal of Science 1921 
and others anterior to the anal plates and near antennz; anal 
plates triangular, the anterolateral margin longer than the 
posterolateral, the angles rounded, with about six rather long (as 
compared with related species described herewith) apical and 
subapical setee, with three or four ventral'ridge sete, also rel- 
atively large, and two pairs of larger fringe sete; anal ring 
with pores and ten setz, of which two pairs are smaller than the 
others; no hypopygial sete. 
Fic, 10. Coccus circularis sp. nov., adult female; a, anal plates, X 220; b, antenna, X 220; ¢, 
marginal sete, showing range of variation, X 1,500; d, spiracular spines, X 640. 
Larva—So far as can be determined from a single not very 
good mounted specimen, the larva is identical with those of 
already described species. 
This species has been described from three mounted adults, 
two, including the holotype, in hollow stems of Macaranga SsPp., 
Singapore (I. H. Burkill 1389), one in hollow stems of Macaranga 
triloba, Singapore (J. H. Burkill 1396) ; from a single larva from 
the same material as the two adults; and from a very few un- 
mounted specimens also from this first lot of material. The 
types are in the United States National collection of Coccide. 
The more conspicuous salient characters of this and the preced- 
ing newly described species are indicated in the following key: 
Key to new species of Coccus Linnzus. 
a‘. Anal plates with numerous (12 to 24) small dorsal sete; without a dis- 
anal ring 
tinct cluster of heavy disk pores anterior to anal plates; 
with eight or ten sete. 
b*. Dorsal surface of body with numerous, large, rounded-conical eleva- 
tions in definite arrangement; marginal sete long slender hairs, at 
least twice length of spiracular spines; dorsum with a brittle, glassy 
coating, molded to conform to elevations and depressions of body; 
anal ring with eight setee.......... ee C. tumuliferus sp. NOV: 
