i-) 13) 
358 . 
DIAPERIS BOLETI. 
Order Coleoptera. Fam. Diaperidae. 
Type of the Genus, Chrysomela Boleti Linn. 
Diaperis Geof, Fab., 01., Lat ., Panz., Sam. — Tenebrio DeG. — Chry- 
somela Linn., Marsh. 
Antennce inserted before the eyes, at the base of the mandibles, 
not longer than the thorax, robust, pubescent, compressed, 11- 
jointed, 3 basal joints slender, the 1st the longest, cylindric, 
2nd minute, 3rd obtrigonate, the remainder somewhat bowl- 
shaped and remote, the terminal joint orbicular-ovate (6). 
Labrum transverse, semioval, producing spiny bristles at the 
anterior margin (1). 
Mandibles alike subtrigonate, slightly bifid at the apex, the in- 
ternal margin with a large notch filled with a callous membrane, 
appearing different when reversed (2). 
Maxillae rather long, internal lobe slender and terminated by a 
brush of strong curved hairs ; external articulated, broad and 
thickly clothed with long hairs at the apex. Palpi robust, 
sparingly pubescent, 4-jointed, basal joint small, 2nd and 3rd 
short and broad, narrowed at the base, 4th long subfusiform (3). 
Mentum suborbicular, truncated at the base. Lip short and 
broad, producing a few long hairs before. Palpi short and thick, 
triarticulate, basal joint small and slender, 2nd subtrigonate, 
3rd the largest subovate (4). 
Head small: clypeus semicircular and depressed, produced into lobes over 
the Eyes, which are lateral. Thorax convex, transverse , narrowed 
anteriorly, sides with a narrow margin, slightly lobed over the 
Scutellum, which is small and triangular. Elytra hemispherical , 
being very convex above. Legs compressed. Thighs broader than 
the Tibiae, the latter with short spines at the apex, the posterior 
pair serrated externally towards the apex. Tarsi simple, rather 
shor t, 5 -jointed(5) , posterior pair 4-jointed (5f ), anterior the short- 
est, terminal joint the longest. Claws bent and acute. 
Boleti Linn. Faun. Suec. p. 1 65. n. 52 7. — Curtis's Guide, Gen. 163. 1. 
Black, shining, very convex ; head and thorax rather thickly 
punctured, the former concave in front, with a semicircular im- 
pression at the base of the clypeus : elytra minutely and sparingly 
punctured, with 9 punctured striae on each j the base, an inter- 
rupted fascia across the middle (both having the marginsdeeply 
sinuated), and a spot at the apex, orange : mouth and legs 
pitchy castaneous. 
In the Author's and other Cabinets . 
