IS, 6 
Morrison: Nondiaspine Coccidse 
665 
This species has been described from a single mounted adult 
female, several mounted embryonic larvae, and two unmounted 
adults, all “in hollow stems of Macaranga, Selander forest, Singa- 
pore” (I. H. Burkill 1319), received from Mr. E. E. Green. The 
types are in the United States National collection of Coccidse. 
The more prominent salient characters of this species are in- 
dicated in the key following this series of descriptions of new 
species. 
Coccus circularis sp. nov. Plate 1, fig. 6. 
Adult female . — Nearly to quite circular, dull grayish, appear- 
ing as if sprinkled with gray powder or dust; flat, but slightly 
ridged transversely about the middle and with low radiating 
ridges around the margin ; anal cleft a little less than one-third 
the body length; extreme margin of body slightly elevated all 
the way around, forming a more or less distinct marginal ridge ; 
maximum length, 3 millimeters ; width the same ; body, as 
mounted on slide, similar in size and shape to the unmounted 
form; without traces of dermal areolation in the specimens ex- 
amined; antennae normally 7-segmented, the lengths of the seg- 
ments in microns as follows : 
Legs normal, small, spiracles normal; derm dorsally with an 
occasional small, circular, simple pore, these scattered widely 
anterior to the anal plates, and with numerous, scattered, very 
tiny, tubular ducts over much of the surface; ventrally near 
margin with numerous large tubular ducts with cup-shaped in- 
ner ends, with a row of quinquelocular pores between each 
spiracle and the margin, and with a number of somewhat larger 
disk pores with six to eight loculi beneath the anal plates; 
marginal setae fairly large, stiff, normally simple and tapering 
to the apex, but occasionally cleft to form two unequal prongs 
near apex ; spiracular spines in threes, the middle one distinctly 
but not prominently the longest, all stout in basal portion, but 
tapering to a rounded point at apex ; dorsally with an occasional 
rather large, stiff, pointed seta, ventrally with submarginal setse 
