138 
Psyche 
[August 
specimens mostly a light yellow brown; body elongate oval, 
tapering somewhat behind the middle; average length 3.5 mm., 
width 2.25 mm; uniformly elongate oval when flattened on a 
slide; clearing completely, except for appendages and ventral 
chitinized thickenings, on treating with potassium hydroxide; 
antennae normally 8-segmented, not unusual, the range of 
measurements in microns of the different segments as follows: 
I, 68-78; II, 64-71; III, 46-53; IV, 28; V, 43-57; VI, 43; 
VII, 46; VIII, 110-118; legs fairly large, stout, the claw without 
denticle, the digitules normal, those of claw slightly knobbed 
at tip, all the legs without tiny pores, but all the coxae with large 
distinct basal aerolations, and the femora and tibiae with similar, 
but quite indistinct, very large aerolations on the upper halves 
of each; beak short and stout triangular, two segmented; 
spiracles large and stout, with a number of disk pores near mouth; 
with two pairs of heavy, thick-lipped dorsal ostioles, cerarii 
very strongly developed, those on the posterior abdominal 
segments narrowly but distinctly isolated from each other, 
those on the anterior portion of the body united to form a 
narrow continuous submarginal band made up of hundreds of 
closely crowded lanceolate spines and triangular pores flanked 
within by dozens of slender set re aggregated to form more or 
less distinct groups; posterior cerarii made up of numerous 
lanceolate spines (apical about 70, preapical about 85, ante- 
penultimate about 80, fourth from last about 70, next about 
65, next about 55) and within each of these ventrally a triangular 
cluster of setae and in and around both spine and setae clusters 
numerous triangular pores; anal lobes not developed, ventral 
ehitinous thickening heavily chitinized, irregular in shape, en- 
closing three or four setae; apical setae set off just outside the 
ventral thickening, large and stout as compared with the anal ring 
setae, perhaps three times the length of these (broken) ; anal ring- 
placed dorsally well anterior to the body apex, small, of normal 
structure, with double pore row and six setae, the derm on each 
side of the ring protruding and overlapping to form two longitu- 
dinal folds covering the ring, except for a linear or oval median 
slit; derm dorsally with numerous, uniformly distributed, 
