oftJiQ Amazon Valley, 161 



very obliquely sinuate-truncate, external angles of the truneature 

 strongly produced, almost mucronate ; surface punctured near 

 the base, light brown, each with a large faint ashy patch on the 

 side before the middle, margined and spotted with dark brown, 

 and an ashy crescent near the apex enclosing a brown dot ; the 

 patch obsolete in many examples, and the apical half of the ely- 

 tron having sometimes three or four ashy specks. Body beneath 

 and legs clothed with dingy brown pile. 



(S Apical dorsal plate broadly emarginated, ventral sharply 

 notched. 



2 Ovipositor projecting the length of a line beyond the tips 

 of the elytra ; dorsal plate pointed, ventral truncated. 



This is an equally common species with N. caudata, being 

 found at all stations throughout the Amazons region, on dead 

 branches. I have seen it in some collections under the name of 

 Leiopus deletus. 



21. Nyssodrys rodens, n. sp. 



N. oblonga, subdepressa, postice sensim attenuata ( c? $ ), nigro- 

 brunnea : thorace vittis quatuor vel sex, elytris lineolis confluen- 

 tibus suturaque cinereo-brunneis ; his apice oblique sinuato-trun- 

 catis, angulis exterioribus valde productis. Long. S^-i^ lin. c? $ . 



Head light brown, occiput blackish. Antennae rusty red, tips 

 of joints dusky. Thorax widened curvilinearly to the tips of the 

 spines, which are short and acute, and placed nearer the middle 

 than the hind angles ; surface blackish brown, with four (some- 

 times six) light-brown vittse (the alternate ones sometimes grey), 

 besides a thin dorsal line, which is often absent. Scutellum 

 light brown. Elytra gradually narrowed from base to apex, the 

 latter obliquely sinuate-truL ^te, outer angles of the truneature 

 strongly produced, almost spiniform ; surface blackish brown, 

 varied with several light-brown (partially grey) streaks of un- 

 equal length and very irregular in position, but always with an 

 angulated one near the apex; suture greyish. Body beneath 

 and legs clothed with light-brown pile. 



c? Apical dorsal and ventral segments both notched. 



$ Ovipositor short, projecting to the length of scarcely half 

 a line beyond the tips of the elytra; dorsal plate narrow and 

 pointed. 



Found throughout the Amazons region, on slender branches 

 and twigs ; beaten once out of a mango-tree. 



22. Nyssodrys lineolata, n. sp. 



N. oblonga, robusta, subdepressa, nigro-brunnea : thorace vittis 

 eeptem plus minusve indistinctis, elytris fasciis duabus lineolarum 

 maculisque subapicalibus cinereo-brunneis ; his . apice siuuato- 



Ann.S^ Mac/, N, Hist. Ser. 3. Vol, xiii, 11 



