26 
Psyche 
[March 
membranes, first thoracic segment, and body appendages 
distinctly smaller, in many cases so small as to be indis- 
tinguishable from granulation. Fourth antennal segment 
with roundly conical apical projection; a distinct subapical 
pit with a small spherical papilla on a short stalk; numer- 
ous blunt sensory hairs of varying lengths starting just be- 
low the level of the subapical pit and continuing about three- 
fourths of the length of the segment. These hairs are of 
two lengths, the larger being about twice as large and some- 
what thicker than the smaller ones. The distal and proximal 
hairs are all of the smaller type. Between these limits both 
types occur, rather irregularly scattered among numerous 
pointed hairs, the larger, blunt hairs being more numerous 
than the smaller. Sense organ of third antennal segment 
consists of two short, slightly swollen, erect rods set in shal- 
low connecting pits, and with two longer, blunt guard hairs, 
one directly internal of the rods, the other positioned some- 
what below and to outer side of the rods. Remainder of 
clothing of third antennal segment consists of four irregular 
transverse rows of more or less curved, pointed setae about 
twice the length of the guard hairs. Second antennal seg- 
ment, three such rows, plus a single pair of very small 
pointed setae dorsal on the base of the segment. First an- 
tennal segment with one row of normal setae and ventrally 
about midway in the segment two short blunted setae set in 
shallow depressions. The outer of these is somewhat less 
than half the length of the normal pointed setae, and about 
twice as large as the inner blunt seta of that segment. Eyes 
eight on each side, on an elongated pigment spot which is 
somewhat attenuated in the middle. The two inner posterior 
eyes smaller than the rest. P.A.O. with flap-like margin 
especially marked on anterior edge, which is indented at 
about the middle. 
Clothing of many short stout setae, smooth and mostly 
curved, so as to be pointing posteriorly. Setae on head 
mostly uniformly short, curved rearward. Head with a set 
of four slightly longer setae directly along the posterior 
margin of the P.A.O. , curved forward so as to overhang the 
P.A.O. ; a few scattered short, straight setae also present, 
mostly along the posterior and lateral margins of the head. 
