The Larvee of the Furniture Beetles. 233 
£.—Feet three-jointed. Head rectangular, deeply sunk in the pro-thorax. 
Antenne showing four joints. Highth pair of abdominal spiracles very large. 
Scutellar fold of pro-thorax very broad. Spinules absent. 
1. Clypeus twice as broad as long; the posterior border a simple 
curve , : : : : . Lyctus brunneus. 
2. Clypeus not twice as broad as long; narrow posteriorly and widening 
anteriorly . : : : : . L. canaliculatus. 
Perris (/oc. cit.) has classified the larvee of the Anobiidz in a similar 
manner, basing his distinctions on the spinules. In so far as the above 
table does not agree with his, I append a comparative summary. 
PERRIS. Munro. 
A. domesticum.—2 or 3 rows of 2 rows on the first 8 abdominal seg- 
spinules on the first 2 abdominal 
segments ; 1 row on abdominal 
segments 3 to 6. A few spinules 
on 7 and 8 and on the sides of | 
ments. None on the 9th. 
the 9th. 
A. paniceum.— Numerous spinules on Two rows only on all the abdominal 
the first 5 abdominal segments segments. 
only, with a few on the 9th. 
£. mollis.—Spinules small. Spinules large. 
P. pectinicornis.—Small asperities Tiny spinules (small asperities) on the 
on the first 4 segments of the scutellar lobes of abdominal seg- 
abdomen below the median line ments 2, 3 and 4, and on the 
on each side. hypo-pleural lobes of segments 
2 to 8. 
X. tesselatwm.—I agree with the 
description given by Perris of 
X. tesselatum. 
The two accounts differ only in small respects. The arrangement of the 
spinules given by me was uniform and constant in all the larve I examined 
of any one species. Finally three larvee of each species were taken at random, 
and in each lot the arrangement of the spinules was uniform and constant. 
It may be that with a change of skin certain spinulee appear or disappear, and 
until any one of these larve is examined in all its stages, or a series of larvee 
in the different stages, nothing further can be said. One point, however, 
worthy of mention is that in larve I examined of different size, and 
presumably therefore of different age, there was no difference in the 
arrangement of the spinules. 
