48 
PSYCHE 
[June 
paler at anal end, the three large tuherele areas above mentioned eonsjiiciious, fol- 
lowed by the minute and much less eouspieuous spiracles. i\Ia)idible.s reddish 
brown; anal proleg large, paler. After several hours the larva becomes normally 
colored for the first instar. 
Instar I. Length after e.xelusion — ’ 1..50 mm., avg. 
Length before ecdysis — 2.60 mm., avg. 
^^’idth of head — 0.65 mm., avg. 
Body fleshy, from cephalic a.s|)ect tubular, from dorsal aspect gourd-shaped; 
dorsal j)lane at head and thorax, inclined, at abdomen greatly conve.xed; lateral 
aspect, ventral plane straight, or slightly concaved near caudal end; with nine ab- 
dominal .segments, the anal segment bearing a pair of ])rehen.sile prolegs. Body 
thickest at 4th abdominal .segment, narrowed at head and thorax, and tapering 
eaudad. Stigmata di.stinct, eireular, and similar on thorax and abilomen; black. 
Head peltate, narrower than following .segment, flat, directed ventrad, glabrous 
black, subhirsute, rather soft, though chitiTious. ( )celli six, 4 arranged so as to form 
a scpiare, the remaining two in a line on the lateral aspect of the heail; the lateral 
two ocelli, of the four in a scpiare, are ocellate with orange; all slightly protuberant, 
and black. Antennae .3-jointed, the fir.st joint paler, joints 1 and 2 sube([ual, broader 
than joint 3; the a])ical joint conical, ending in three or four .stiff, sensory setae, 
an d paler di.stally (dorsal as])ect); in reality (lateral aspect) black, nearly uniform 
in width, the distal joint a])parently 2-branchcd, its dorsal branch much the larger, 
cylindrical and truncate, and the ventral branch slender, conical, and spine-like, in 
reality, a spinous prolongation of the veutro-cephalic angle of joint 3 (the appendix). 
Mandil)les short and broad, at ba.se about two-thirds as wide as long, pale 
yellowish, fu.scous at tips, subreetangular, outer margin slightly curved and convex, 
the inner margin shorter and irregtdar; with four strong acute .serrations, of which 
the first three are about eipial in size, the .second, however, about one-third longer, 
the fourth or inner one-half shorter and blunt. 'Maxillary palpi 3-jointed, longer 
than the antennae; labial palpi 2-jointed; both apparently with an additional basal 
joint, evidently a portion of the stipes; both jialer at tip. ladu’um broad, notched 
at the median line. Maxillary and labial ])alpi both bear .scn.sorv .setae. 
'I'horax cylindrical, ])iot borax largest, its slyeld covering nearly the whole of the 
dorsum, black and divided by a thin median line concolorous with body; tubercles 
more alnindant on the shield. Thoracic .segments corrugated, the sclerites incon- 
spicuous. 
Legs black, the articulations paler, 5-jointed (usual leg joints), the coxa broad, 
tibia and femur suber|ual in length, the former more slender; from dorsal a.s])cct 
(natural position), mo.st of the tibia and all of the tarsus visible. Tarsi, 1-jointed, 
