158 Mr. H. W. Bates on the Longicorn Coleoptera 



and terminating before reaching the suture ; the third is an 

 oblique spot near the apex. The second and third fasciae vary 

 much in form — both^ in some examples, being reduced to spots 

 which do not touch the lateral margin. In well-developed in- 

 dividuals, the space between the second and third fasciae is of 

 an ashy hue. Body beneath and legs clothed with ashy pile ; 

 the legs sometimes reddish. 



($ Apical ventral segment triangularly notched at the apex. 



$ Ovipositor elongated, projecting 1^ line beyond the tips of 

 the elytra; dorsal plate pointed, ventral truncated. 



This is an extremely common species in the Amazonian forests, 

 on fallen trees. The varieties do not seem to be confined to parti- 

 cular localities, as I found extreme forms (as to the development 

 of the markings of the elytra) living together at Ega. It is 

 found also at Cayenne, and exists in French collections under 

 the name of Leiopus caudatus, Lacordaire, MS. 



16. Nyssodrys siynifera, n. sp. 



N. oblonga-elongata, parum convexa, brunnea : elytris fasciis duabus 

 plagam magnam cineream includentibus maculaque parva subapicali 

 nigro-brunneis, apice subtransverse truncatis : $ segmento ventrali 

 ultimo breviter emarginato. Long. 4^5| lin. c? $ • (6 exempl.) 



Head ashy brown. Antennae rusty red, tips of joints dusky. 

 Thorax very slightly widened to the tips of the spines, the latter 

 short, but prominent, and placed nearer the middle than the 

 hind angles, the space between them and the base being mode- 

 rately narrowed ; surface silky brown. Elytra oblong, apex 

 scarcely obliquely truncated in the $ , more obliquely in the c? ; 

 surface thickly punctured, except over the apical third (which is 

 very smooth), light brown, with two dark-brown fasciae on each 

 elytron, the basal one oblique, the second angulated at the 

 middle, neither touching the suture, the space between them 

 being of a light ashy colour ; near the apex is a small rounded 

 dark-brown spot ; the disk on the apical portion is tinged with 

 ashy ; the sides are silky brown. Body beneath and legs clothed 

 with tawny-ashy pile. 



6 Apical ventral segment broadly emarginated. 



2 Ovipositor projecting 1^ line beyond the tips of the elytra; 

 dorsal plate obtusely pointed, ventral briefly emarginated at the 

 apex. 



This elegant species is found throughout the Amazons region, 

 from Para to Ega. I have seen it, in Parisian collections, under 

 the name Leiopus hieroglyphicus (Buquet), Dej. Cat.; but as the 

 following species also exists in the same collections under this 

 name, and no diagnosis has been published to guide us in de- 



