ART. 17. MONOPHLEBINAE AND MARGARODINAE—MORRISON. 23 
This species is represented in the Maskell collection by five slides, 
one of “ adult female, 1894,’’ one of ‘antennae of female, 1893,’”’ one 
of ‘larva, 1894,’ one of ‘“‘male larva, alate, 1896,” and one of ‘‘adult 
male, 1896,”’ and by some specimens bearing No. 389. No other 
specimens have been available for study. 
Adult female-—External appearance of mature females as described 
by Maskell, the colored spots of secretion very indistinct in the dried 
museum specimens, uniform dark reddish brown, maximum length 6 
mm., the abdominal region dorsally shriveled and with large trans- 
verse folds, concave beneath for the entire length of the body, with 
a considerable amount of compacted fluffy secretionary matter, this 
filling the ventral groove, overlapping the body margin somewhat 
and spreading out on the adjacent portions of the host; body very 
strongly convex, approaching an ovate globular form at maturity; 
derm clearing to a considerable degree on treating with potassium 
hydroxide, but retaining some light yellow brown color; antennae 
rather large and long, 10-11 segmented, these and the legs retaining 
their dark color; measurements in microns as follows: IT, 103; II, 
89; VP 100: We bee ale VAT) | 78; VAIL, 825) TX, 985. X, 200; 
legs fairly long, femur stout, the parts of a middle leg with the fol- 
lowing lengths in microns: Femur, 357; tibia, 346; tarsus, 321; claw, 
89; claw stout, claw digitules relatively small and slender, with two 
pairs of thoracic and three pairs of abdominal spiracles, the latter at 
the posterior end of the body, the first much the largest, all without 
pores; derm pores dorsally of one type only, multilocular disk, with 
linear, oval, or trilocular centers, and the number of loculi varying 
from six to ten, scattered rather uniformly over dorsum, much more 
numerous in a wide band along margin; ventrally, in the thin abdom- 
inal membrance, less heavily chitinized, with large transverse center 
and four small loculi arranged in pairs on each side of, and close to, 
the center; genital region closely crowded with circular to oval, lightly 
chitinized, multilocular disk pores with oval or triangular centers, 
and as many as twelve loculi; derm setae, so far as noted, of one 
type only, long and slender, scattered, varying greatly in size, and 
relatively very large along the body margin, these last all broken, so 
actual length not determinable, all, so far as examined, with a conical 
collar at the base; anal opening a short, simple tube without pores; 
ventral cicatrices not noted. 
Larva.—Elongate egg-shaped, tapering posteriorly, length 875z, 
width 494y, antennae 6-segmented, all but the first slender, the last 
strongly clavate, of normal, Icerya-like form, the measurements of 
one in microns as follows: I, 50; II, 61; III, 71; IV, 46; V, 54; VI, 
143; legs slender, measurements in microns of a middle leg, femur, 
140; tibia, 211; tarsus, 164; claw, 39; claw with a tiny denticle 
60466—23—Proc.N.M.vol.62 42 
