jas Morrison: Nondiaspine Coccidx 665 
This species has been described from a single mounted adult 
female, several mounted embryonic larve, and two unmounted 
adults, all “in hollow stems of Macaranga, Selander forest, Singa- 
pore” (J. H. Burkill 1319), received from Mr. E. E. Green. The 
types are in the United States National collection of Coccide. 
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 1ofig. 6: 
Adult female.—Nearly to quite circular, dull grayish, appear- 
ing as if sprinkled with gray powder or dust; fiat, 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; antennse normally 7-segmented, the lengths of the seg- 
ments in microns as follows: 
II IIL IV. Vv. VI. Vil. 
40 46.5 40 12.5 18 46.5 
46.5 46.5 36 14 21 50 
50 46.5 40 18 18 46.5 
50 ® 57 40 14 18 46.5 
50 43 43 14 14 43 
43 50 36 14 18 46.5 
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 sete 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 sete 
