NEW BRITISH SPECIES NOTICED IN 1857. 75 



state in cases of insects imported from that country in 

 January last, although greatly resembling the insect now 

 under consideration in size and colour, presents upon a careful 

 examination so many important differences, that I am at a 

 loss to comprehend how any one possessed of only ordinary 

 Entomological acumen, having the two species before him, 

 could even for a brief period assert their specific identity : 

 the sub-quadrate head, slender antennae, large prominent 

 eyes and comparatively narrow thorax of the Anglo-American 

 insect, not only indicate its specific distinctness from L.fdi- 

 formis, but involve its location in another section of the 

 genus. 



81. Dorcatoma flavicornis, Fab. ; Sturm, Deutchsl. 



Fauna, Ins. xii. 103, Tab. 245, fig. a A (1837). 

 Bruchus flavicornis, Fab. Ent. Syst. I. ii. 374, 24 

 (1792); Syst. El. ii. 401, 38 (1801). 

 Found by myself in a decaying oak, within the metro- 

 politan district, in July last. Fig. 7. 



82. Rhyncolus truncorum, Germar, {nee Steph.); E. 



W. Janson, Proc. Ent. Soc, 1 June, 1857, Zool. 

 5768 (1857). 

 Cossonus truncorum, Germar, Col. Spec. Nov. 308, 

 446 (1824). 

 Taken by myself in May last, within the London district. 

 Fig. 9. 



83. Bostrichus bispinus, Ratzeb. ; T. J. Bold, Zool. 



5411 (1857) [Tomicus]; E. Newman, Zool. 5631 

 (1857) [erroneously bispinosus] ; E. W. Janson, 

 Proc. Ent. Soc. Tjune, 1857, Zool. 5768(1857); 

 but not of Guyon, Zool. 4815 (1855), cited by me, 

 Ent. Ann. 86, 26 (1856), whose description probably 

 refers to B. bidens. 

 This species will probably be found wherever the Travellers' 

 Joy {Clematis vitalba), in the stems of which it feeds, occurs. 



