Otiorrhynchus.'] RHYXCHOPHORA. 175 



ii. Elytra with distinct raised seise. 



1. Elytra with the alternate interstices strongly 

 raised, thickly covered with round greyish yellow 



and brown scales O. SEI-TESTRIOVIS, fierbst. 



(scaber, L.) 



2. Elytra with the alternate interstices not rai ed. 



A. Rostrum with a deep furrow ; length 6- 



7t mm . . . . O. SCABROSFS, Marsh. 



B. Rostrum even, scarcely, if at all, furrowed ; 



length 4r-5i mm O. LIGNEUS, 01. 



1 1. Anterior femora more or less plaiuly toothed beneath. 



i. Apical external angle of anterior tibiae much 



dilated ; size large (exceeding 10 mm.) ; general 



colour greyish O. LIGUSTICI, L. 



ii. Apical external angle of anterior tibiae not or 

 scarcely dilated; size moderate or small (not ex- 

 ceeding 10 mm.). 



1. Elytra thickly covered with small round scales, 

 which are present also on the punctures of the 

 elytra; teeth of anterior femora very indistinct ; 



length 6^-8 mm O. PICIPES, F. 



(singularix, L.) 



2. Elytra without scales, but with small very scat- 

 tered tufts of fiue subsquamose yellowish hairs ; 



length 9-10 mm. . - O. S^LCATUS, F. 



3. Elytra with scanty greyish pubescence ; length 



4|-6| mm. 



A. Thorax granulate without longitudinal fur- 

 rows in middle O. BUGIFROXS, Gyll. 



B. Thorax granulate with strong longitudinal 



furrows in middle. 



a. Body black, broader, less thickly pubescent ; 



disc of thorax very strongly furrowed . . O. OTATTIS, L. 



b. Body pitchy red, narrower, more thickly 



pubescent ; disc of thorax feebly furrowed . O. MUSCOBUM, Bris. 



O. tenebricosus, Herbst. A large and conspicuous species, black, 

 moderately shining ; head and thorax finely coriaceous, the latter narrow, 

 rounded and slightly dilated at sides ; rostrum with, a carina in middle ; 

 antennae very long, slender, black or pitchy ; elytra oblong ovate more 

 or less acuminate at apex, with small fascicles of ashy pubescence, which 

 are very fugitive and only visible in fresh specimens, and with punc- 

 tured stria?, which differ in the sexes, interstices shagreened; legs red 

 or pitchy red, elongate, femora clavate not toothed on under side. 

 L. 10-13 mm. 



Male narrower with the anal segment of the abdomen strongly striated, 

 and the elytra more distinctly punctured. 



Female broader with the anal segment of the abdomen punctured, and 

 the elytra obsoletely punctured. 



In moss, at roots of grass, under stones, &c. ; also on various fruit trees, and often 

 taken by beating whitethorn hedges ; rather common, especially in chalky districts, 

 but local. London and South-eastern and Southern districts of England, generally 

 distributed ; Bath ; Swansea ; Salford Priors, Warwickshire ; Scotland very rare, 

 Solwuy and Forth districts (this record may be in error, as it rests on the authority 



