136 
Psyche 
[June 
provided with several holes in the chitin where probably sense 
organs of some kind are placed; mouthparts very incompletely 
developed, mandibles curved, more or less membranaceous and 
folded horizontally, maxillae small, maxillary palpi three-jointed 
the second joint only half the size of the basal one, the apical 
joint very small, weakly pointed. Labium anteriorly forming a 
small chitinous ring on which the small 2 jointed labial palpi are 
inserted, the terminal joint pointed; head forming a solid chi- 
tinous case, sides from the base of the antennae to the small 
simple eyes parallel, from these converging backwards; eyes 
in the living animal marked by a small pigmented spot. Pro- 
thorax forming a large triangular shield, in the middle of the 
front margin with two small tubercles and two corresponding 
ones on the ventral side, hind angles obtuse, at the posterior 
margin in the middle with two small black shining tubercles; meso- 
and metathorax broader, more rounded at the sides, both with a 
pair of small black tubercles separated by a yellowish patch at 
the hind margin, both segments with a pair of extraordinary large 
spiracles. Legs consisting of a long and robust coxal part, a 
trochanter-like one, a tibial and a tarsal one which is hairy below 
and bears at the end a single strong and sharp claw. Abdominal 
tergites nine in number, the first seven fairly equal in size, the 
eighth and ninth gradually becoming smaller, the hind angles of 
all segments protruding as a backwardly bent process of lighter 
color and with a pair of black tubercles separated by a yellow 
patch, except on the apical segment, where the tubercles are 
missing; posterior margin of last segment slightly sinuate; the 
corresponding sternites show the lateral parts set off by a deep 
furrow, in the middle with two rows of protruding spines, which 
at the top carry a tuft of dirty white bristles. On the distinctly 
set off lateral portions of the segments there are two rows of 
tubercles, one interior consisting of small black tubercles and 
one exterior row of large slightly curved processes which become 
lighter colored towards the tips; obviously these rows of ventral 
tubercles serve for locomotory purposes, enabling the larva to 
move about on the loose jungle soil; the terminal segment with 
a large circular round whitish suction disc. 
