LEPTURIDJE ANOBID^E. 187 



(252) 14. * Leptura longiceps. Long-headed Leptura. 



L. (longiceps J nigra, punctulata, ex pube alba subincana ; capite elongato ; prothorace canaliculato ; elytris luridis lilura antica, 

 sutura, apicequc, nigris. 



Long-headed Leptura, black, minutely punctured, somewhat hoary from white down; head elongated; prothorax chan- 

 nelled ; elytra lurid with an anterior blotch, the suture, and apex black. 



Length of the body 4 lines. 



Several specimens taken in Lat. 54°. and 65°. 



DESCRIPTION. 



Like the preceding species but shorter in proportion with a longer head. Body black, punctured, 

 hoary with rather silvery down : head as long or longer than the prothorax ; eyes pale, subtriangular : 

 antenna? with the second, third, and fourth joints slenderer than the rest : prothorax shaped as in 

 L. Proteus, constricted before, depressed behind, but without diverging angles, channelled but with 

 no gibbosity on each side the channel : elytra nearly linear, very thickly punctured, dirty-yellow, 

 with a dusky lateral blotch extending from the base beyond the middle of the elytrum, suture and 

 subtruncated apex black ; down yellowish. 



Having now described all the Capricorn beetles and other Longicornia of La- 

 treille taken in the Expedition, and being arrived at a spot whence there is a direct 

 path to his Eupoda, I shall again retrace my steps, and call back the reader's atten- 

 tion to the last family of Mr. W. S. Mac Leay's Rectocera, the Passalidce, from 

 which, as was before observed, 2 we may get an approach, by the Scolytidce, &c. to 

 the great tribe of Rhynchophorous beetles, or those the anterior part of whose 

 head terminates in a rostrum or snout. 



A most remarkable insect, taken by Edward Bennett, Esq. in Choco, in Colom- 

 bia, and a specimen of which may also be seen in the collection of the British 

 Museum, may be here noticed, as supplying the first stage in the route now indi- 

 cated. Its general figure is that of a Passalus, only more convex and cylindrical: 

 it has the same description of mandibles but rather straighter ; a similar upper-lip; 

 the vertex is crowned with an incurved horn as in Passalus cornutus, &c. ; the 



See above, p. 163. 



2 B 2 



