270 [December, 



Khynchites hakwoodi, sj). nov. 



The differentiation of the two species of RhyncMtes, R. nanup., 

 Paylc, and B. iincinatns, Thorns., has always been a puzzle to me. 

 The difficulty has been quite cleared up liy the discovery that there is 

 a third species, resembling B. micinatus almost exactly in shape, but 

 having no tooth at the apex of the anterior tibiae. I have much 

 pleasiu-e in naming this species, B. karwoodi, in honour of my friend, 

 Mr. P. Harwood, who did so much for the Berks Coimty List of 

 Coleoptern, when resident at Newbury. 



The following is a short description of the species : — 

 In general appearance very like R. uncinatus ; bhie, thorax with a sliglit 

 greenish tinge, legs and antennae blue-black ; rostrum rather long and slender, 

 longer in 9 than <? ; thorax longer than broad, distinctly rounded at the sides, 

 closely but rather variably pvmctured ; elytra mvich broader than thorax, 

 widened behind middle, strise strongly punctui-ed, interstices very narrow and 

 somewhat rugose ; apex of anterior tibia3 simple ; S , apex of middle and pos- 

 terior tibiffi with a small tooth. Long., 3 — 4 mm. 



-B. harwoodi differs from B. tmciriahis in having no tooth at the 

 apex of the anterior tibiae ; the rostrum is longer, and so appears to 

 be more slender, in both sexes (in the ? B. nncinatus it is not, or 

 scarcely, longer than in the ^ B. Jianvoodi) ; the thorax is more 

 greenish in colour and is generally more rounded at the sides, l)ut 

 the punctuation and depth of the central furrow is variable in both 

 species ; the elytra are, on the average, slightly broader, the striae 

 are more strongly punctured, and the interstices distinctly narrower. 

 From B. ■nanus it is easily distinguished by its bluer colour, broader 

 and shorter form, much longer and more slender rostrum, more closely 

 punctured, and more rounded sides of thorax, and average larger 

 size. The median lobe of the a3deagvis is not quite so parallel- sided 

 as in B. uncinatus or B. nanus, and is narrower at the apex ; the cap- 

 piece is a little broader than in B. uncinatus, and has slightly longer 

 hairs at the apex ; in B. nanus this structure is quite narrow, with 

 much shorter hairs. All the sjjecimens I have seen of B. harwoodi 

 were taken in this neighbourhood, in Berks and Hants, and I believe 

 it is common here. It is probably a widely distributed insect. 



Bradfield, Berks : 



November, 1911. 



