160 Mr. H. W. Bates on the Longicorn Coleoptera 
sexes scarcely obliquely sinuate-truncate; surface faintly punc- 
tured towards the base, light brown, each elytron before the 
middle with a large hoary-white patch sprinkled with clear dark- 
brown spots, not corresponding with the punctures ; behind this 
white patch there is the usual angulated silky-brown lateral spot, 
besides a subapical smaller spot on the disk. Body beneath 
and legs clothed with lightish-brown pile. 
& Apical dorsal plate feebly, ventral deeply notched. 
@ Ovipositor projecting very little beyond the tips of the 
elytra; dorsal plate obtusely pointed, ventral truncated. 
Ega, Upper Amazons. It has also been found in the interior 
of French Guiana by M. Bar. The species is readily distinguish- 
able from the two preceding by the white patch of the elytra 
being sprinkled with distinct dark-brown spots. 
19. Nyssodrys efflicta, n. sp. 
N. oblonga, parum convexa, brunnea: elytris utrinque plaga angu- 
lata pone basin guttulisque numerosis griseis, apice oblique sinuato- 
truncatis. Long. 43 lin. ¢ 2 
Head ashy brown. Antenne rusty red, tips of joints dusky. 
Thorax widened slightly from the front to the tips of the lateral 
spines, which are small and acutely conical and placed about as 
near the middle as the hind angles; surface light brown, with 
paler specks. Scutellum dark brown, with a central line ashy. 
Elytra oblong, apex in both sexes obliquely sinuate-truncate ; 
surface thickly punctured near the base, hght brown, each with 
an angulated greyish patch on the side before the middle, and 
sprinkled with short greyish streaks or spots. Body beneath 
and legs clothed with lightish-brown pile. 
3 Apical dorsal plate broadly emarginated, ventral deeply 
notched. 
2 Ovipositor projecting a line and a half beyond the tips of 
the elytra; dorsal plate pointed, ventral slightly notched. 
A common insect on branches of fallen trees in the forest, 
both on the Upper and Lower Amazons, and at Para. 
20. Nyssodrys deleta, n. sp. 
N. oblonga, parum convexa, brunnea, sericea; scutello, plaga laterali 
elytrorum seepe obsoleta maculaque subapicali cinereis: elytris 
apice peroblique sinuato-truncatis, angulis externis fortiter pro- 
ductis. Long. 3-5 lin. ¢ Q. 
Head ashy brown. Antenne rusty red, tips of joints darker. 
Thorax slightly widened from the front to the tips of the lateral 
spines, which are small and acute and placed near to the hind 
angles, the space between them and the base scarcely narrowed; 
surface light brown. Scutellum ashy. Elytra elongate-oblong, 
