294 Mr. D. Sharp's Contributions to the 



Very similar at first sight to S. angustatus. Antennne 

 yellow, as lono; as licad and thorax ; 1st joint rather stout, 

 2nd more slender and a good deal longer than 3rd ; 4 — 7 

 slender, 8 — 10 each a little thicker than its predecessor, 

 10th more than twice as long as broad, 11th distinctly 

 stouter and a good deal longer than 10th. INlandibles 

 elongate, yellow. Head broader than the thorax, about 

 as broad as the elytra, blackish, with reticulate punctua- 

 tion, which becomes more rugulose on the vertex. Thorax 

 small, rather longer than broad, much narrower than the 

 elytra ; much narrowed towards the base, and more abruptly 

 towards the front, blackish, with a coarse, reticulate scul]}- 

 ture. Elytra broad and short, scarcely longer than the 

 thorax, black, Avith the apical portion pale yellow, the pale 

 part slightly broader near the suture than at the sides; 

 they are densely, rather coarsely and rugulosely punctured. 

 Hind body blackish, Avith the hind part of the 6th and 

 following segment paler; it is rather stout and convex, but a 

 good deal narrowed at the base ; it is coarsely punctured. 

 The legs are rather short, and almost white. 



Rio Purus ; a single female, taken by Dr. Trail on the 

 13th October, 1874. 



Obs. — This species much resembles our European S. nn- 

 (justatua, but is slightly larger, the antenna} are conside- 

 rably longer, the elytra are shorter and more rugulosely 

 pmictured, and the pale colour does not extend so far 

 forwards along the suture ; the hind body is more con- 

 stricted at the base, and the eyes are a good deal larger. 



6. Sunius marginatus, n. sp. Niger, fortiter puuctatus, 

 antennis elongatis, pedibusque pallide testaceis: elytris 

 thorace longioribus, apice late testaceis. Long. corp. 

 2 lin. 



Antenna} slender, quite as long as head and thorax ; the 

 10th joint scarcely visibly thicker than the preceding ones, 

 and the 11th only very slightly thicker than 10th. Head 

 coarsely punctured, and with reticulate sculpture. Thorax 

 with reticulate scul})ture, of which the meshes are large 

 and distinct. Elytra rather longer than the thorax, with 

 a coai-se and rather distinct punctuation, black, vnth. the 

 hind margin yellow, the yellow colour extending much 

 farther forwai-ds along the suture than elsewhere. Hind 

 body rather coarsely punctured, and with distinct, rather 

 coarse pubescence and seta}. 



