12 MANDIBULATA. — COLEOPTERA. 



oval subsolid, .^-jointed. Rostrum rather short, stout, deflexed, rounded : 

 thorax subcylindric, slightly convex, the base and apex truncate, the latter 

 slightly attenuated : elytra elongate, subcylindric, covering the abdomen : legs 

 short, stout ; the apex of the tibia;, which are compressed, armed with a 

 horizontal hook. 



The ten-jointed antennae of Mecinus, combined with their elon- 

 gate-subcylindric form, covered apex of the abdomen, rather short, 

 robust rostrum, &c., are its chief points of distinction from the 

 allied genera : the species reside in grassy places. 



Sp. 1. semicylindricus. Linear i-elongatus, niger, cinereo-pubescens, antenna- 

 rum hasi tarsisque Jerrugineis, elytris punctato-striatis, femoribus obsolete 

 dentatis. (Long. corp. 1^2 lin.) 



Cu. semicylindricus. MarsAam.— Me. semicylindricus. Steph. Catal. 149. No. 

 1505. 



Linear-elongate, black, clothed with a deUcate cinereous pubescence ; thorax with 

 a. delicate transverse stria near the anterior margin, the disc obsoletely rugose- 

 punctate: elytra punctate-striate, the interstices faintly rugulosej the apex 

 sometimes rufescent: base of the antennae and the tarsi ferruginous; the an- 

 terior femora obsoletely dentate. 



Not uncommon within the metropolitan district : I have taken it 

 plentifully in Battersea-fields, Hertford, Ripley, &c. : it occurs in 

 Norfolk and near Bristol. " Among grass and on the naked sand- 

 hills, not uncommon." — L. W. Dlllwyn, Esq. 



Sp. 2. hsemorrhoidalis. Lineari-elongatus, niger, subpubescens, antennarum 

 basi, tibiis tarsisque rufo-ferrugineis, elytris margine laterali apiceque piceis. 

 (Long. corp. 1:^— if Un.) 



Cu. hsemorrhoidalis. Herbst ?—M.e. haemorrhoidalis. Steph. Catal. 149. JVo. 

 1507. 



Linear-elongate, black, slightly pubescent : thorax thickly punctate, with the 

 margins concolorous 5 elytra with the lateral margin and apex piceous, striated ; 

 the strife obscurely punctate, the interstices subrugose : femora dusky ; tibiae 

 and tarsi rufo-ferruginous : antennae the same, with the club black. 



Gyllenhal considers this insect as the opposite sex of the foregoing : but of that 

 I have both sexes, not differing from each other in any other external points 

 than the usual sexual characteristics, size and form. 



Found within the metropolitan district ; also in Devonshire and 

 Somersetshire. 



Sp. 3. circulatus. Lineari-elongatus, niger, villosus, lineti pallida snbgrised 

 utroqne latere marginatns. (Long. corp. 'J lin.) 



