1947] 
Dilaridee and Berothidce 
153 
Fully developed larva (possibly more correctly de- 
scribed as a prepupa, though no cocoon is associated). — 
Abdomen much more enlarged than head, in contrast to 
first instar (fig. 5); legs reduced; jaws truncate, much 
shorter than palpi (loss of apices by fracture possible but 
uncertain) ; maxilla with conspicuous sculpture (fig. 12). 
Front more produced than in the first instar, broadly 
rounded ; anterior half of median dorsal surface of head 
with broadly convex area poorly demarked; posterior 
half with pattern of pale sutures and 3 lateral setae. Pre- 
mentum small, irregular, anterior margin entire ; mentum 
narrowed apically, broadly rounded basally, flanked by 
elongate sclerites (undifferentiated cardo and stipes?); 
cervical region with conspicuous, laterally concave apo- 
demes, each with a detached, V-shaped base. Front and 
middle legs subequal (hind legs lost) ; tarsus rather freely 
articulated with tibia (fig. 22) ; trochanter distinct; tarsal 
claws equal; no observed pulvilli at base of claws; em- 
podium apparently broadly incised apically, otherwise 
much as in Nallachius ; a definite “sole” ventrad of claws 
(fig. 18). Pronotum with large paired laterodorsal 
sclerites on anterior two-thirds, a weak transverse suture 
on posterior third ; meso- and metanotum each with small, 
narrow, semilunar sclerites ; anal sucker apparently well 
developed. 
Coloration : Head, cervical apodemes, thoracic sclerites, 
and coxae brown; claws and “sole” pale brown; abdomen 
with poorly demarked dorsal pattern of light purple 
transverse bands ; remainder pale. The unpublished 
notes of H. G. Hubbard contain the following description, 
made from life, of the Washington larva: 
“General color is purple-brown, darker on thoracic 
segments and almost black on the head; lighter beneath; 
variegated with pure white. The legs and mouth organs 
are translucent white. Beneath, each abdominal segment 
has a large triangular spot of yellowish white, which looks 
like the luminous glands of Lampyridae, but was found 
not luminous above or below. The dorsal surface is gaily 
decorated with snow-white markings — viz. : On prothorax, 
on each side, a narrow white line beginning behind the 
