;588 



Mr. D. Snavj)'s Cuiitrihutions to the 



the Auca/is mef/ace/)halus to be most allied to Lis/n/nis ; 

 but the two insects 1 have described as JI. cluvipes and 

 II. Fauveli difier in a highly im]iortant respect from the 

 species of /./^/jz/z?^^, inasmuch as they have the front coxre 

 exserted and not covered or separated by any process 

 similar to that Avhicli is so conspicuous in Lispinus. I 

 must not be understood as implying that the two insects 

 1 here allude to will be idtimately considered congeneric 

 with the other llolotrochi here described, for I consider 

 that in the present state of our knowledge of these Stnphy- 

 linidce it is quite impossible for us to decide where there 

 really occur those separations and gaps between species 

 Avhich warrant the formation of genera. 



1. Ilolotrochns clurus, n. sp. Niger, glaber, nitidus, 

 parce sod distincte pnnctatus, antennis piceis, pedibus 

 piceo-rufis. Long. corp. 3^ lin. 



Mas : abdomine segmentis ventralibus 6 et 7 profunda 

 impressis. 



AntennfB stout, shorter than head and thorax, insertion 

 near the front of the eye in a large cavity, greatly over- 

 lapped by the side of the clypeus; 1st joint much con- 

 cealed, and thick, 2nd joint small, 3rd a good deal longer 

 than 2nd, dilated towards the extremity; joints 4 — 10 

 transverse, 11th rather narrower than 10th, obtusely 

 pointed; the six basal joints are pitchy, the others red, but 

 this colour is much obscured by the pubescence. Head 

 much narrower than the thorax; clypeus greatly rounded 

 in front; the surface shining and rather finely and sparingly 

 but quite distinctly punctured. Thorax scarcely so long 

 as broad, almost broader than the elytra ; the sides a little 

 rounded towards the front, nearly straight behind the 

 front, and thence only very slightly narrowed to the base ; 

 the hind angles almost right angles; the surface is shining 

 black, rather sparingly but distinctly pimctured; it is 

 transversely convex, the sides margined, the base closely 

 applied to the elytra and not margined; near the hind 

 angles are traces of a longitudinal impression. Elytra 

 slightly longer than the thorax, with a well-marked 

 sutural stria modei'ately finely and sparingly punctured, 

 with an indistinct lonoitudinal series of four or five larger 

 punctin-es along the middle. Hind body with segments 

 2 — 5 of equal width, each segment smooth in the middle, 

 obscurely punctured at the sides, less shining than the front 



