Staj)liylinid(2 of the Amazon VuUvy. 293 



a more uniform pale colour, and the sculpture of the upper 

 surface is much finer. A closely allied but distinct species 

 is found at Rio de Janeiro. 



4. Sunius ventralis, n. sp. Fulvus, antennis, pedibus, 

 palpisque fere albidis, abdomine segmento 6° dorsali basi 

 obscuriore ; capite thoraceque opacis, dense minus distincte 

 punctatis ; elytris parcius punctatis, nitidulis ; abdomine 

 apicem versus dilatato, parcius punctate, evidenter pubes- 

 cente. Long. corp. If lin. 



About the size of S. anrjustatus, but rather more slender. 

 Antennae long and slender, as long as head and thorax, 

 scarcely thickened towards the apex, very pale yellow ; 

 3rd joint much longer than 2nd. Labrum very short, with 

 a slight notch in the middle, it is a little angular on each 

 side of the notch. Head considerably broader than the 

 thorax, about as broad as the elytra ; eyes large, and placed 

 at the middle of the sides, remote from the antennas ; the 

 surface densely but indistinctly punctured, with the punc- 

 tures large and ocellated, the interstices extremely fine. 

 Thorax rather small, more than half as broad as the elytra, 

 longer than broad, a good deal narrowed towards the base, 

 and rounded in front ; sculpture similar to that of the head. 

 Elytra rather broad, short and convex, a little longer than 

 the thorax, yelloAvish in colour, paler at the apex than at 

 the base, on the middle of each an obsolete trace of a 

 darker mark; the punctuation sparing at the extremity, 

 closer at the base. Hind body convex, narrow at the base, 

 a good deal broader towards the extremity, shining but 

 for the long, fine pubescence ; rather coarsely punctured, 

 the punctures consisting of three rows of transversely 

 placed punctures on each segment; these rows very dis- 

 tinct on the under side, much less distinct on the upper. 

 Legs very pale yellow. 



In the male the 6th segment of the hind body has on 

 the under side a large, impunctate, longitudinal impres- 

 sion, and the following segment bears a small notch at the 

 extremity. 



Tapajos ; a single male. 



Ohs. — This species is interesting from the peculiar, 

 CEdichirus-Wkje. punctuation of the hind body. 



5. Sunius strictus, n. sp. Nigricans, antennis, palpis, 

 pedibus, elytrorumque apice pallide testaceis ; elytris tho- 

 racis longitudine, rugulose punctatis. Long. corp. 2 lin. 



