668 The Philippine Journal of Science 1921 
anal plates, in a semicircular arrangement, three groups on 
each side of the plates, these the ‘“cribriform plates” of the 
deseribers of the genus, most of the larger pores apparently 
with a flexible extrusible portion with a gmall seta at the apex; 
body margin unevenly crenulate, a narrow strip more heavily 
chitinized; antenne small, of the rudimentary type, indistinctly 
2-segmented, with faint traces of a third segment occurring as 4 
narrow chitinized strip at the base of each antenna, this. bearing 
a long, slender seta, the apical segment with five or six sete; the 
whole antennz about 54 to 57 » long; legs apparently wholly want- 
ing; spiracles small, shank slender, outer end widely expanded, 
inner end less so; marginal sete slender, hairlike, scattered, ap- 
parently occurring in groups of twos or threes, with relatively 
long intervals between the groups; spiracular spines stout, not 
tapering, apices rounded, somewhat longer than the marginal 
setee, placed in a deep closed incision in the body margin; dorsal 
surface sete apparently confined to those mentioned in connection 
with the pores; ventral sete not observed; with a single row of 
minute, quinquelocular disk gland pores running from each 
spiracle to the corresponding group of spines, and with a few, 
similar, but much larger pores with more loculi, ventrally in 
the anal plate region; no other gland pores noted; anal plates 
triangular, together diamond-shaped, length about 190 to 203 p; 
width of each, about 71 »; the anterolateral and posterolateral 
margins about equal in length; normally with an apical and three 
dorsal sete close to the posterior end of each plate, with four 
or five ventral setee on each and with one fringe seta on each 
side, all of these minute; anal plates with two or three minute 
dorsal pores near and posterior to the middle of each; anal 
ring small, thick, approximately circular, with six relatively long 
and prominent sete, these somewhat swollen just before the 
base, the longest about 268 p. 
Young larva.—Elongate oval, more narrowed anteriorly, nearly 
0.5 millimeter long and 0.22 wide; yellowish brown before treat- 
ing with caustic potash; antenne 6-segmented, the last longest, 
the third nearly as long, average lengths of these (in microns) : 
II, 14; III, 43; IV, 16; V, 10; VI, 53; total length of legs about 
a fourth greater than that of antenne; with a few, widely 
separated, tiny marginal sete; with a single, relatively stout, 
spiracular spine set in a heavily chitinized incision in the body 
margin opposite each spiracle; with four or five minute multi- . 
locular disk pores between each spiracle and its spine; no other 
ducts or pores noted; anal plates proportionately more elongate 
