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SYNODENDRON CYLINDRICUM. 
Order Coleoptera. Fam. Lucamdse. 
Type of the Genus, Scarabseus eylindricus Linn. 
Synodendron Fab . — Sinodendron Lat., M c Leay, Curt . — Scarabseus 
Linn. 
Antennae inserted under the edge of the clypeus, before the eyes 
and close to the base of the mandibles, short, slightly genicu- 
lated and clavate, 10-jointed, basal joint very long and clavate, 
curved at the base, 2nd globose, larger than the 5 following, 
which are somewhat cup-shaped and slightly increasing in dia- 
meter, the remainder forming a serrated club of wedge-shaped 
joints, the 9th joint being a little the shortest, the terminal one 
truncated obliquely and coriaceous at the apex (6). 
Labrum small, subtrigonate and very pilose at the anterior mar- 
gin (1). 
Mandibles alike, small trigonate, slightly arcuated, acute and 
hollowed at the apex (2). 
Maxillae terminated by an ovate hairy lobe with a smaller lan- 
ceolate one on the inside. Palpi 4 -jointed, basal joint as long, 
but a little slenderer than the 3rd, 2nd nearly twice as long, the 
stoutest, clavate-truncate, 3rd slightly cup-shaped, 4th as long 
as the 2nd elongate -ovate (3). 
Mentum suborbicular, truncated before and hairy. Up semi- 
ovate rigid and pilose, with the Palpi attached near the apex, 
approximating at their insertion, small and triarticulate, 1st and 
2nd joints nearly of a size and cup-shaped, 3rd twice as long 
and subovate (4). 
Head with a horn on the clypeus of the male, more or less curved and 
erected, pubescent above on the sides ; the female having only a tu- 
bercle (8?). Eyes small and lateral. Thorax large semicylindric, 
anterior angles lobed, abruptly truncated in the male, forming a cres- 
cent-shaped nearly vertical front, the superior margin projecting and 
sinuated, producing a tooth at the centre and a smaller one on each 
side ; but slightly excavated in the female (8 9, front view of head 
and thorax ) .* scutellum obtuse, nearly concealed. Elytra convex , 
oblong, rounded at the apex, and completely covering the abdomen. 
Wings ample. Legs rather short and stout: thighs short and broad: 
tibiae curved and broad, narrowed at the base, spurred at the apex, 
strongly spined outside, the anterior pair very deeply serrated exter- 
nally: tarsi rather shorter than the tibia: , slender and 5 -jointed, 4 
basal joints very short , 5th long and clavate: claws long and curved, 
(5, a fore leg). 
Cylindricum Linn. — Curtis’s Guide, Gen. 136. 1. 
In the Author s and other Cabinets. 
