275. 

 SAPERDA ATKINSONI. 



Order Coleoptera. Fam. Cerambycidai Lat..^ Leach. 



Type of the Genus, Cerambyx scalaris Linn. 



Saperda Fab., Oliv., Panz., Leach, Gyll. — Lamia Lat. — Cerambyx 

 Linn., Marsh. 



AntenncE inserted on the inner margin of the eyes, as long or 

 longer than the body, setaceous, slightly hairy j 1 1 -jointed, basal 

 joint robust, 2nd subglobose, 3rd the longest, remainder de- 

 creasing in length to the end (6). 



Labrum pocket-shaped, covered and ciliated with long and fine 

 hairs (1). 



Mandibles rather slender, subtrigonate, bent and acute at the 

 apex, externally pilose (2). 



MaxilicE small with an internal lanceolate and ciliated lobe and 

 a rounded external one. Palpi long, 4-jointed, basal joint 

 slender clavate, the remainder of nearly equal length, the 2nd 

 and 3rd being somewhat clavate, the 4th subfusiform (3). 

 Mentum short, transverse, producing long and fine hairs. Lip 

 long and large, horny and narrowed at the base ; dilated, mem- 

 branous, pubescent and hexagonal beyond the middle. Palpi 

 robust and rather long, inserted near the middle of the lip, tri- 

 articulate, basal joint small, 2nd and 3rd long and pilose, the 

 former clavate, the latter subfusiform, with a vesicle at the 

 apex (4). 

 Head short, deflexed vertically ; face flat. Eyes kidney -shaped, re- 

 ceiving the antenncE. Thorax cylindric without spines. Scutellum 

 small, obtrigonate truncate. Body cylindric. Elytra long linear, 

 convex or quadrate. Wings ample. Legs strong. Tibiae, anterior 

 with two minute spines towards the apex. Tarsi thickly clothed with 

 bristles beneath, 4-jointed, \st and 2nd joints of equal size in the an- 

 terior pair, the \st joint the longest in the others, 3rd joint bilobed, 

 4th clavate. Claws hooked, with a tooth at the base (5). 



Atkinsoni Nob. 



Black, completely clothed with short depressed ochreous pubes- 

 cence, with a dull greenish tint. Palpi piceous ; tips of mandi- 

 bles and eyes black. Antennae subferruginous, except the 3 first 

 joints. Thorax punctured, with a central channel at the base. 

 Elytra broadest and square at the base, each shoulder black at 

 the tip as if rubbed, there are also 2 slight black dots at the mid' 

 dle near to the suture, and 2 further apart, nearer to the apex. 



In the Author's Cabinet. 



Saperda is so closely allied to Lamia in the structure of the 

 trophi, that Latreille considered it to form only a division of 

 this genus, the only distinction of any importance being the 



