194 
Psyche 
[September 
vals ; preapical streak of recumbent white hairs extending from second 
interval to lateral edge of elytra, short posterior prolongations into 
interval four and along elytral edge, a broad diffuse band of white 
recumbent hairs between the humeri, prebasal streak extending from 
interval two to elytral margin, a short prolongation into interval 
six, an additional diffuse patch of white hairs between the prebasal 
streak and the apices of the elytra. Ventral surface uniformly 
clothed in yellowish-gold hairs. Abdomen with sternites one to three 
somewhat connate mesally, sternite two twice as long as four. 
Metacoxae transverse, separated by one-half their width. Legs black, 
stout, covered with rather long and stiff golden setae, femora 
sprinkled with short white hairs, setae on upper tibia stiff and bristly, 
finer and inclined distally, tarsi with segments I to IV gradually 
decreasing in length, V equal to II and III combined. Genitalia 
(Figs. 15, 16) like typical Ptinus with ventral basal piece and lateral 
lobes attached dorsally to the median lobe. Median lobe gradually 
enlarged, widest just before apex, lateral lobes embracing closely the 
median lobe, basal piece 1.5 times as long as wide. 
Description of mature larvae: General body form as in other 
described ptinid larvae (Boving 1956, Manton 1945). Total length: 
4-5 mm. Head (Fig. 1) hypognathous, pale yellowish-white, epicra- 
nial sulcus extending to the anterior third; three dorsal sclerotized 
areas: anterior third dark brown, small central patch and lateral 
areas yellowish-tan. Setae fine, white; four parallel rows on each 
side extending about midway from the rear edge, the two rows near 
the epicranial sulcus approximate, a single pair of setae in the central 
sclerotized area. Dark anterior area with two series of short setae 
marginally, four shorter setae near the midline, anteriorly an elon- 
gate pit with three to four setae, a second such structure with three 
setae on the anterior edge of the head at the lateral border of the 
anticlypeus, both with long setae projecting forward over the labrum. 
Antennae consisting of a sclerotized ring in a membranous socket 
located in the anterior edge of the head slightly above and mesal to 
the dorsal mandibular articulation. Tactile appendix of the antennae 
cone shaped, twice as long as wide, surrounded by several smaller 
sensory setulae. Anticlypeus rectangular, membranous. Labrum 
(Fig. 8) twice as wide as long, gradually curved distally; long setae 
born on the anterior edge and on either side basally, Y-shaped 
sclerites or tormae extending through the anticlypeus into the labrum ; 
three basal labral sensillae: one on the midline and one between the 
arms of each torma. Epipharynx (Fig. 9) with four to six short 
