579. 

 RHYZOPHAGUS BIPUSTULATUS. 



Order Coleoptera. Fam. Cerylonidae Curt. 

 Type of the Genus, Lyctus ferrugineus Payk. 

 Rhyzophagus Herb., GylL, Curt. — Cerylon Lat. — Lyctus Fab., 

 Payk., Panz. — Corticaria Mars. — Ips Oliv. 

 AntenncB attached to a little shoulder just before the eyes, scarcely 

 longer than the head, capitate, pilose, 11 -jointed, basal joint 

 stout, subovate, narrowed at the base, 2nd subovate, 3rd nearly 

 as long as the 1 st but slender, 5 following small, subquadrate, 

 9th larger, the remainder forming a globose hairy club, the 10th 

 joint being the largest, the 11th transverse with the centre pro- 

 duced like a 12th joint (6). 



Labrum very short and broad, scarcely projecting beyond the 

 clypeus, ciliated and bristly, having 2 long parallel ones at the 

 centre (1). 



Mandibles rather elongated, rounded externally, the apex notch- 

 ed, with a minute tooth beneath terminating a long leathery 

 margin on the inside, ciliated towards the top (2). 

 Maxillee slender, composed of 2 lobes, the internal one broad 

 rounded and ciliated very densely towards the apex, the external 

 forming a long slender coriaceous palpiform lobe, apparently 

 articulated at the apex. Palpi stout and 4-jointed, basal joint 

 small, 2nd subobtrigonate, 3rd bowl-shaped, 4th the longest, 

 ovate-conic, the apex fleshy (3). 



Mentum rather large, transverse, the anterior angles rounded, 

 the centre produced and forming a base to the Lip which is 

 semiovate, the centre with a small notch. Palpi short stout 

 and composed of 2 joints, the 1st obconic-trigonate, 2nd a little 

 longer and ovate, the apex fleshy (4). 

 Head ovate, contracted at the base, the clypeus considerably narrowed 

 and semiovate : eyes small lateral and distant from the Thorax, 

 ■which is generally oblong : scutellum suborbicular. Elytra narroiv, 

 linear, twice as long as the thorax, rounded at the apex, but not co- 

 vering the abdomen. Wings ample. Legs short, nearly alike in 

 size : thighs incrassated : tibiae very much dilated at the apex and 

 compressed, with a short stout spine at the apex : tarsi slender, 5, 5 

 and 4-jointed, 3 first joints in the anterior short, and clothed with 

 long hairs betieath, 4th small, 5th long and clavate (5) ; hinder pair 

 with the 3 frst joints short, the 2nd being very hairy beneath, 3rd 

 the smallest, 4th long and clavate : claws simple (5 f, hind foot). 



BiPUSTULATUs Fab. — Curt. Guide, Gen. 250. 4*^. 



Smooth, shining, piceous ; clypeus, antennae and legs ferrugi- 

 nous ; thorax oblong-obovate, truncated before, sparingly but 

 strongly and regularly covered with oval punctures, rather closer 

 on the head : elytra with 8 or 9 striae on each, deeply and re- 

 gularly punctured, shoulders castaneous with a round or lunate 

 ferruginous spot towards the apex, which is margined vrith the 

 same colour, the shoulders more castaneous. Obs. some speci- 

 mens have the elytra entirely black. 



In the Author s and other Cabinets. 



