606. 

 PARAMECOSOMA BICOLOR. 



Order Coleoptera. Fam. Corticaridae ? 

 Type of the Genus, P. bicolor Curt. 

 Paramecosoma Curt, in Ent. Mag. 



Antennce inserted before the eyes, as long as the head and 

 thorax, pubescent, capitate and 11-jointed, basal joint stout and 

 ovate, 2nd smaller and ovate, 6 following slender, somewhat 

 obovate, 3rd the longest, 5th nearly as long, 7th rather longer 

 than the 6th, 3 terminal joints dilated and compressed, 9th 

 somewhat obtrigonate, 10th broader, cup-shaped, 11th as large 

 as the basal joint, suborbicular, but notched externally at the 

 apex (6). 



Labruni rather large, transverse, somewhat ovate, with a few 

 small bristles on the margin (1). 



Mandibles subtrigonate, one rounded, the other angulated ex- 

 ternally, the apex acute and crenated beneath, at least in one, 

 with a ciliated notch below (2). 



Maxillce with 2 ciliated lobes, the internal one, apparently, 

 forming a claw at the apex, the outer one rounded and broader. 

 P«//32 rather elongated, 4-jointed, basal joint small and slender, 

 2nd and 3rd stout, cup-shaped, 4th the longest, ovate, at- 

 tenuated to the apex which has a gland (3). 

 Mentmn subtrigonate, the anterior margin bisinuated, having a 

 tooth at the centre. Palpi very short and stout, attached to 

 scapes which approximate at the base of the lip, biartictdate, 

 basal joint small cup-shaped, 2nd larger and ovate, slightly pu- 

 bescent externally, with a gland at the apex (4). 

 Head broad, trigonate, obtuse : eyes lateral, prominent and orbicular. 

 Thorax a little broader than the head, transverse-quadrate, the sides 

 slightly convex, tvith 1 or 2 obscure denticulations, the hinder angles 

 acute, the centre convex over the scutel which is transverse-ovate. 

 Elytra elliptical, considerably broader than the thorax. Wings large. 

 Legs, hinder rather the longest : thighs and tibiae simple, the latter 

 a little clavate : tarsi rather long slender and 5 -jointed, basal joint 

 slightly elongated, 4th the smallest, 5th the longest, clavate : claws 

 long slender and acute (5 f, hind leg). 



Bicolor Curt. Guide, Gen. 241. 1. 



Shining ferruginous clothed with short ochreous pubescence ; 

 head, excepting the mouth, eyes thorax and scutellum black, 

 strongly and thickly punctured ; thorax convex, with a small 

 fovea on each side at the base near the posterior angles : elytra 

 with lines of strong punctures very close together. 



In the Cabinets of Mr. Walker, Mr. Walton, and the Author. 



