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 fasciz 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 fascie 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 14 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 1 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 signifera, n. sp. 
N. oblonga-elongata, parum convexa, brunnea: elytris fasciis duabus 
plagam magnam cineream includentibus maculaque parva subapicali 
nigro-brunneis, apice subtransverse truncatis: 9 segmento ventrali 
ultimo breviter emarginato. Long. 44-5} lin. ¢ 9. (6 exempl.) 
Head ashy brown. Antenne 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. LElytra oblong, apex 
scarcely obliquely truncated in the 2, more obliquely in the ¢; 
surface thickly punctured, except over the apical third (which is 
very smooth), light brown, with two dark-brown fasciz 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. 
3 Apical ventral segment broadly emarginated. 
¢ 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 Hga. I have seen it, in Parisian collections, under 
the name Leiopus hieroglyphicus (Buquet), De}. 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- 
