666 
The Philippine Journal of Science 
1921 
and others anterior to the anal plates and near antennae; 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 setae, with three or four ventral ridge setae, also rel- 
atively large, and two pairs of larger fringe setae ; anal ring 
with pores and ten setae, of which two pairs are smaller than the 
others ; no hypopygial setae. 
Fig. 10. Coccus circularis sp. nov., adult female ; a, anal plates, X 220 ; b, antenna, X 220 ; c, 
marginal setae, 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 sp., 
Singapore (I. H. Burkill 1389 ) , one in hollow stems of Macaranga 
triloba, Singapore (I. 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 Coccidse. 
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 Linnaeus. 
a 1 . Anal plates with numerous (12 to 24) small dorsal setae; without a dis- 
tinct cluster of heavy disk pores anterior to anal plates; anal ring 
with eight or ten setae. 
B 1 . Dorsal surface of body with numerous, large, rounded-conical eleva- 
tions in definite arrangement; marginal setae 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 setae C. tumuliferus sp. nov. 
