17 
L-IM? 
286 . 
TRICHIUS VARIABILIS. 
Order Coleoptera. Fam. Melolonthidse Leach. Scara- 
baeides Lat. Cetoniidae MacL. 
Type of the Genus, Scarabaeus variabilis Linn. 
Trichius Fab., Lat., Leach , MacL., Sam. — Cetonia, Oliv. — Scara- 
baeus Linn., Mar., Don. 
Antennce inserted close to the eyes, shorter than the head, capi- 
tate, 10-jointed, basal joint large, curved, narrowed at the base, 
producing long hairs and bristles, 2nd joint turbinate, 3rd sub- 
quadrate, 4th and 5th transverse, 6th cup-shaped, truncated ob- 
liquely, 7th subcampanulate, the remainder forming a long and 
slender lamellated club, pubescent beneath, the 9th joint being 
the thinnest (6). 
Labrum coriaceous transverse, slightly emarginate with a small 
lobe at the centre (1): beneath is a thicker pilose membrane, 
of the same shape at the margin, with the lobe ciliated (*). 
Mandibles with the external portion horny and lanceolate, the 
internal shorter, dilated, membranous and pubescent, the base 
horny (2). 
Maxillce with the stalk long, terminated by an articulated ovate 
lobe, densely clothed with fine long hairs, an oblong ciliated lobe 
on the inside below the Palpi which are short slender and 4- 
jointed, basal joint minute, 2nd and 3rd short obovate, 4th long, 
compressed and obtuse at the apex (3). 
Mentum large, very pilose, subquadrate, truncated at the base 
and the anterior margin. Labium short, forming 2 thick pilose 
lobes. Palpi short, attached to the posterior angles of the labium, 
triarticulate, basal joint short and slender, 2nd obtrigonate, 3rd 
the largest oval (4) . 
Clypeus covering the Trophi, quadrate, the anterior margin reflex ed 
and slightly emarginate. Thorax suborbicular , truncated anteriorly. 
Scutellum trigonate. Abdomen bituberculate at the apex in the fe- 
males. Elytra not covering the body, subquadrate. Wings very 
ample. Legs long. Tibiae with a tooth outside below the middle, 
anterior compressed with a spine at the apex, the others spurred, the 
middle pair very much curved in the males (5*). Tarsi long, rather 
pilose beneath in the males, 5 -jointed, basal joint scarcely longer than 
the 2nd, terminal joint as long or a little longer than the 1st. Claws 
bent acute. Pulvilli minute. 
Variabilis Linn. Faun. Suec. 139. 402. — octopunctatus Fab. Ent. 
Syst. 1.2.119.3. 
Black, shining. Head with the punctures forming reticulations. 
Thorax coarsely, thickly and irregularly punctured, with a shal- 
low depression down the back. Elytra very broad and glossy, 
rugose with punctures forming obscure striae ; 10 yellowish white 
spots across the middle forming a depressed cross. Abdomen in 
the male, with a small ochreous spot on the side of each segment, 
and 2 large ones on the last. Underside partially villose, the 
hairs ochreous. Legs punctured. 
In the Author's and other Cabinets . 
