3.92 RHYNCHOPHORA. [CoSSOHUS. 



antennae and legs pitchy red or ferruginous ; rostrum more than twice 

 as long as head with a broa.d quadrangular depressed dilatation at apex ; 

 thorax a little longer than broad, very feebly constricted just before 

 apex, comparatively finely and not closely punctured ; elytra with deep 

 punctured striae, interstices smooth, slightly convex, a little broader 

 than the striae; femora robust, tibia? widened internally in middle. 

 L. 4-6 mm. 



Male with the dilated part of the rostrum rather shorter than in 

 female, and the abdomen broadly impressed at base and clothed with 

 yellow pilose pubescence. 



Female with the abdomen not pilose. 



In decaying willows, elms, oaks, &c. ; very local and, as a rule, not common ; 

 Highgate (Power, in plenty); Greenwich; Battersea; Richmond Park (Champion); 

 Hampstead (S. Stevens) ; Plymouth and Exeter ; Swansea ; Sherwood Forest 

 (under oak bark (Blatch)). 



As the name C. linearis has been adopted for three different species 

 belonging to the genus, I have thought it best to drop it altogether. 



RHOFALOIVIESITES, Wollaston. 



The genus Mesites, with which the single British species has usually 

 been united, contains about fifteen species which are widely distributed 

 in the Canaries, Madeira, Ceylon, St. Vincent, &c. ; the genus Rhopalo- 

 mesites, containing the single species S. Tardyi, is slightly less cylin- 

 drical than Mesites, and somewhat more convex, with the eyes more 

 approximate, the antenna more elongate, the club much larger and 

 abrupt, the legs rather longer, the thorax more oblong and the rostrum 

 of the male considerably longer and more slender ; the genus may at 

 once be known by having the rostrum very different in the sexes, and 

 by having the antennae inserted near the base in the male, and consider- 

 ably in front of middle, where the rostrum is dilated, in the female. 

 The species is found very locally in hollies and beech trees, especially in 

 Ireland. 



R. Tardy i, Curt. Elongate, rather depressed, extremely variable 

 in size in both sexes, not very shining ; antennas and legs ferruginous ; 

 upper surface with very fine, scarcely evident, whitish pubescence ; 

 rostrum moderately curved, very different in the sexes ; thorax much 

 longer than broad, with sides narrowed in front and constricted before 

 apex, closely and rather strongly punctured with more or less distinct 

 traces of a central raised smooth line which sometimes appears as a 

 smooth patch in the centre ; elytra with moderately deep, but not 

 plainly punctured, stria?, interstices broader than the strias, flat, rugoscly 

 punctured ; femora angled beneath. L. 6-12 mm. 



Male with the rostrum narrower than in female, angularly dilated 

 just before base, where the antennae are inserted, punctured at base, 

 and smooth and shining in front of the insertion of the antennse. 



