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tips of the lateral spines, which are conical and placed obliquely 
near the hind angles, thence narrowed in an oblique line to the 
base; surface dark brown, with scant ashy pile, and marked 
with four curved tawny spots arranged in a quadrangle on the disk, 
and embracing in their curves so many dark-brown spots. Elytra 
subovate, convex; apex briefly and obliquely truncated, outer 
angle of the truncature slightly produced ; surface punctured 
towards the base, dark brown ; disk and suture bluish grey, 
speckled with brown ; parallel to the suture is a row of small 
tawny patches, and in the middle of the lateral margin a tri- 
angular patch of the same hue. Body beneath and legs clothed 
with fine ashy pile ; thighs not very thickly clubbed. 
$ Ovipositor short, projecting very little beyond tips of ely- 
tra ; dorsal plate plane, and rounded at the tip, ventral truncated. 
Found both on the Upper and Lower Amazons, on dead 
branches*. 
3. Nyssodrys cinerascens, n. sp. 
N. oblongo-ovata, parum convexa, obscure bruimea, cinereo macu- 
lata et conspersa : thoracis spinis lateralibus conicis, prope angulos 
posticos sitis : elytris breviter oblique truncatis, angulis exteriori- 
bus productis. Long. 4-4| lin. c? $ • (6 exempl.) 
Head black, with fine ashy pile. Antennae reddish, tips of 
joints, from the third, black. Thorax widened from the front 
to the tips of the lateral spines, which are conical and placed 
near the hind angles, thence narrowed in a very oblique line to 
the base ; disk dark brown, with several ashy marks, four of 
which form in the middle two subinterrupted vittae. Elytra 
subovate, slightly convex ; apex briefly and obliquely truncated, 
outer angle of the truncature distinctly produced ; surface punc- 
tured towards the base, dark brown, with patches of ashy-grey on 
the disk, speckled with dark brown, and with a number of small 
patches of ashy grey lying parallel to the suture. Body beneath 
and legs black, clothed with fine ashy pile. 
S Terminal dorsal plate obtusely sinuated at the tip, ventral 
rather deeply and semicircularly notched. 
2 Ovipositor projecting one-third of a line beyond the tips 
of the elytra; dorsal plate tapering to the tip, but rounded, 
ventral truncated. 
Common at Para. 
4. Nyssodrys corticalis, n. sp. 
N. elliptica, convexa, sordide fulva, brunneo vittata : thoracis spinis 
* There is an example of this species in Mr. Bakewell’s collection, 
ticketed “ South America” (probably from Cayenne), which has the tawny 
marks very clear ; but the four spots on the thorax are nearly straight, and 
almost form two tawny vittae. 
