6 MANDIBULATA. COLEOPTERA. 



subcylindric : tihiw slightly rountled, with a hook at the apex : tarsi slender, 

 with the penultimate joint sometimes bilobed. 



This genus differs chiefly, according to Schonherr, from Cossonus 

 in the form of the rostrum, the more convex body, the greater length 

 of the third joint of the antennse — the basal one of the funiculus — 

 and the smaller club. The species reside in old trees, and the first, 

 which has been supposed to inhabit Britain, closely resembles a 

 species of Hylurgus. 



B. With the rostrum cylindric, longer than the head. 



Sp. '2. lignarius. Nigro-piceus, glaber, antennis pedibusque dilutioribus, thorace 



subtiliter punctulato. (Long. corp. 1^ — 1^ lin.) 

 Ca. lignarius. Marsham. — Ba. lignarius. Steph. Catal. 149. No. 1497. 



Dark, piceousj glabrous; head delicately punctured 5 thorax thickly and finely 

 punctulated, with an obsolete dorsal carina : elytra punctate-striate, the inter- 

 stices flat, smooth : body dull piceous beneath, punctured : legs and antennae 

 pale rufo-piceous, the club of the latter paler. 



Not unfrequently taken from beneath the bark of elms, in the 

 vicinity of the metropolis : I have captured it in such situations 

 in Battersea-fields ; at Hertford, near Darenth-wood, &c. : it also 

 occurs near Bristol. " Taken in a house at Swansea, and by Mr. 

 Jeffreys on the sand-hills." — L. W, Dillwyn^ Esq. " Epping." — 

 Mr. Doubleday. 



Sp. 3. piceus. Piceus totus, rostro crassiusculo, thoraceque punctatis, elytris sub- 



pilosis. (Long. corp. 1 1 — 2 lin.) 

 Ca. piceus? Wilkin MSS.—Ba. T^iceus. Steph. Catal. 149. iVo. 1498. 



Entirely piceous: thorax rather deeply punctate; elytra punctate-striate, the 



interstices punctulated, with a few scattered hairs. 

 Similar to the foregoing, but the rostrum shorter, more porrect and punctulated, 



the basal joint of the antennse more slender ; thorax more deeply punctate. 

 Probably the Cossonus culinaris of Reich. 



Found, though rarely, near London, and also in other parts. 

 " Taken beneath the Zostera marina on the banks of the river 

 Orwell, near Ipswich, by Rev. R. Sheppard," — Marsham MSS. 

 " Taken on the sand-hills (near Swansea)."" — L. W. Dillwyn, Esq. 



Sp. 4. truncorum. Piceus, glaber, thorace suhovali, profunditis punctata, elytris 



profunda sulcato-punctatis. (Long. corp. if — 2 lin.) 

 Co. truncorum. Schlippel. — Ba. truncorum. Steph. Catal. 149. No. 1499. 



