t>L, 
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426 . 
CYCHRUS ROSTRATUS. 
Order Coleoptera. Fam. Carabidae. 
Type of the Genus , Tenebrio rostratus Linn. 
Cyciirus Fab., Lai., Curt . — Carabus Marsh .— -Tenebrio Linn. 
Antennce inserted on each side the head considerably before the 
eyes, slender and attenuated, 11 -jointed, basal joint the longest 
and stoutest, 2nd and 4th the shortest, 3rd nearly as long as the 
1st, the following pubescent, 5th considerably longer than the 
4th, the remainder slightly decreasing in length, the 11th as 
long as the 5th, attenuated and conical (6). 
Lahrum produced into 2 long, rounded, and densely ciliated 
lobes, with 2 long bristles in the middle near the base, and one 
on the outside of each lobe towards the apex (1). 
Mandibles porrected long and narrow, the apex forming a curved 
tooth, with 2 others below, the whole of the internal margin 
thickly ciliated (2). 
Maxillce porrected, long and slender, terminate 1 by a narrow 
horny lobe hooked at the apex, ciliated with curve pines, with a 
membranous and ciliated margin extending to th ise. Palpi ; 
internal forming a thin dilated subovate slightly cated lobe ; 
external long and large, 4-jointed, basal joint m e, 2nd very 
long and clavate, 3rd short elongate-obovate, trur , producing 
2 bristles on the inside, longer in the females, 4 j nnt spoon- 
shaped in the males (3$)* hatchet-shaped in the ales (£). 
Mentum rather large and subquadrate, sides sligh ivex, an- 
terior margin deeply cut out, forming 2 subtrigor lobes, with 
a slightly convex margin in the middle, from w r ce arise the 
Palpi, which are as large as the maxillary and attached to scapes 
united at their base, triarticulate, basal joint minute globose, 
2nd very long clavate, producing 3 spines on the inside, 3rd 
joint very large, subovate, narrow at the base and spoon-shaped, 
smaller and hatchet-shaped in the females, Lip formed of 2 di- 
varicating linear lobes with a small and shorter one in the centre 
producing 2 bristles (4). 
Head long narrow and ovate. Eyes small prominent and lateral. Tho- 
rax broader than the head, obovate truncate, posterior angles re- 
flected. Scutellum nearly concealed. Elytra twice as broad as the 
thorax, ovate-conic, connate and embracing the abdomen. Wings 
none. Legs alike in both sexes. Tibiae spurred, anterior not emar- 
ginate but hollowed beneath at the apex. Tarsi slender , basal joint 
the longest, 3 following obtrigonate, 5 th as long as the 1st clavate. 
Claws slender bent and acute (5<J, tibia and tarsus of fore leg). 
Rostratus Linn. Faun. Suec. 226. 823. — Curt. Guide, Gen. 11.1. 
In the Author's and other Cabinets. 
