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( 518 . 
BYTURUS TOMENTOSUS. 
The Raspberry-beetle. 
Order Coleoptera. Fam. Nitidulidae? 
Type of the Genus, Dermestes tomentosus Fab. 
Byturus Lat., Curt. — Dermestes Fab., Panz., Mars., Gyll. — Ips 
Oliv. 
Antennae inserted on each side the clypeus before the eyes, not 
longer than the thorax, clavate, pubescent, 11 -jointed, 2 basal 
joints stout, 1st pear-shaped truncated, 2nd shorter, 3 following 
elongate-obovate, 3rd the slenderest, 6th short obovate, 7th cup- 
shaped, the remainder forming a perfoliate club, the 8th joint 
being small and bowl-shaped, 9th and 10th the same shape but 
large, 11th subtrigonate slightly cordate (6). 
Labrum inserted under the clypeus, submembranous, pocket- 
shaped, pubescent and ciliated with strong bristles (1). 
Mandibles sublunate, being curved and acute, hairy outside, 
with a transparent lobe inside, the upper portion very pube- 
scent (2). 
Maxillae small, linear, terminated by 2 very hairy lobes, the inter- 
nal one narrow and elongated, the other maxillseform. Palpi 
rather stout, slightly pubescent and4-jointed, basal joint small, 
2nd and 3rd of equal length, the former inflated, the latter 
clavate, 4th the longest, subfusiform, the apex obtuse (3). 
Mentum semiorbicular, anterior margin deeply excavated. Lip 
subquadrate, the anterior portion very much dilated, forming 2 
divaricating hairy membranous lobes. Palpi smaller than the 
maxillary, inserted at the base of the lobes, pubescent, triar- 
ticulate, basal joint small, 2nd elliptical, 3rd the longest and 
stoutest, subfusiform obtuse (4). 
Head drooping , subtrigonate : eyes small lateral and prominent . Thorax 
transverse, convex, truncated and narrowed before, base bisinuated, 
the angles pointed: scutellum subovate: elytra elongate-ovate, con- 
vex and covering the body: wings ample. Legs short: thighs ellip- 
tical: tibiae rather slender, with short spines at the apex: tarsi 5- 
jointed, pubescent beneath, basal joint small , ‘IndandZrd with mem- 
branous appendages, bilobed, Ath minute, 5th long and clavate : claws 
long, curved, acute , recurved at the base. (5 a fore leg, f apex of 
tibia and tarsus of hind leg.) 
Tomentosus Fab. — Curt. Guide, Gen. 157. 1. 
Black, clothed with short yellowish -white pubescence giving 
it a slate colour ; thickly and minutely punctured : mouth an- 
tennae and legs ochraceous ; elytra with very indistinct punc- 
tured striae. The variety called flavescens is entirely deep 
ochreous with black eyes. 
In the Author's and other Cabinets . 
