18, 6 Morrison: Nondiaspine Coccide 6783 
ing the rudimentary type; spiracles small, with slender shank 
and expanded ends; marginal flabellze fan-shaped, large, broadly 
expanded, roughly circular in outline, widest at or a little 
beyond the middle, the edge entire, faintly striate, the striz 
diverging from base; in older individuals the fliabelle usually 
distinctly wider than long and widest about the middle, over- 
lapping more or less, this varying from adjacent flabelle only 
slightly, overlapping to alternate flabelle nearly meeting across 
the intervening one; spiracular spines three to a group, stout, 
but not very large, each group set in a distinct chitinized inci- 
sion of the margin, all three approximately equal in size; body 
margin with tiny incisions between the insertions of the fla- 
belle, usually with only a single incision, making two lobules, 
sometimes with two incisions and three lobules, this arrange- 
ment inconspicuous, and sometimes obliterated in the older, 
mature individuals; with an occasional minute dorsal seta at 
least near the margin; no differentiated ducts or pores observed 
on the dorsum; ventrally with a single row of quinquelocular 
pores running from each spiracle to its corresponding spines, 
and with some similar, but larger, pores with more loculi around 
the anal plates; anal plates small, each about 125 p long by 46 » 
wide, set at the apex of a short cleft with contiguous sides ; 
each plate sharply angulate anteriorly and posteriorly, the outer 
angle rounded off, widest at or a little behind the middle, the 
posterolateral margin faintly crenulate; perhaps with two very 
minute subapical sete dorsally, apparently with three ventral 
sete and a single fringe seta on each side, all these minute; with 
two minute dorsal pores on each plate at and posterior to the 
middle; anal ring small, normally placed well anterior to the 
anal plates, the sete longer than the plates, curved and noticeably 
expanded at base, six in number. | 
Larva.—Elongate oval, about 0.63 millimeter long by 0.32 
wide; antennze 6-segmented, fairly well developed, average 
measurements as follows (in microns) : I, 14; II, 13.5; 413. 30.4 ¢ 
IV, 21.4; V,.17.8; VI, 35.7; legs fairly well developed; the 
lengths of a middle leg, coxa, 29 »; trochanter and femur, 64 1; 
tibia, 35 ,»; tarsus, 32 2; tibiotarsal articulation indistinct; 
marginal sete slender, hairlike, in no way resembling the fia- 
bellee of the adult; spiracular spines set in a chitinous incision 
of the margin, three in number, the intermediate the largest; 
anal plates elongate, slender, rounded anteriorly, sharply pointed 
posteriorly, about 50 » long, with an apical seta about 46 » long. 
