18, 6 Morrison: Nondiaspine Coccidx 651 
tending both anterior and posterior to the plates, and having 
the appearance of poorly constructed bi-, tri-, or quadrilocular 
pores, with a circular or slightly oval outline; ventrally with at 
least two types of pores, the circular disklike multilocular pores, 
apparently all quinquelocular, a small row running from each 
spiracle to the body margin, and a few, widely separated, for 
some distance around the anal plates, the nearest approach to 
grouping coming just posterior to the plates, the latter noticeably 
larger than the first, and the elongate, slender, tubular ducts 
with deep asymmetrical cup-shaped bases, most numerous along 
the margin, here apparently opening into the margin itself, and 
again somewhat more numerous along the median ventral line 
anteriorly, but scattered more or less over the whole surface; 
anal plates surrounded by a narrow chitinous band about as long 
as the whole of the mouth parts, plates about 265 » long, and 
each about 80 to 85 » wide, bluntly rounded anteriorly, more or 
less pointed posteriorly, widest at a point about one-third of the 
total length from the posterior apex, the outer angle rounded or 
very bluntly angular, dorsally with numerous, rather jong, 
slender setze scattered from base to apex, arranged in very in- 
definite transverse and usually diagonal rows, the number vary- 
ing from forty to fifty-three, with forty-four or forty-five as the 
commonest number, each plate with a large apical seta about 
twice as long as the dorsal setz, with six to eight somewhat 
stouter sete on the short posterior ventral ridge, the inner lower 
corner of the ridge attached to a chitinized plate which extends 
downward and cephalad along the median line, and together 
with the anal plates completely incloses the anal ring, except for 
the narrow dorsal and apical slit between the plates; this 
chitinized plate bearing eight or nine sete at its upper posterior 
extremity, these appearing to correspond to the fringe sete 
found in other species, and standing two or sometimes three 
deep ; with a cluster of small spinelike sete visible in mounts just 
posterior to the apex of the anal plates, these possibly homol- 
ogous with the hypopygial sete of some other species, but more 
probably merely a group of ventral sete; anal ring small, placed 
within the posterior half of the anal plates, the sete about a third 
or a little more of the plate length, the total number varying 
from at least ten to twelve, the ring itself with a double to triple 
row of pores. 
Larva.—Oval, pale brown in dried condition, flat, naked ; length, 
about 0.77 millimeters; width, about 0.48; becoming clear when 
boiled in caustic potash; legs and antennz well developed, the 
179044——~3 
