130 Mr. D. Sharp's Contributions to the 



middle, the last joint again paler ; 3rd joint rather long 

 and slender, considerably longer than the 2nd ; from the 

 4th to the loth each joint is a little shorter than its pre- 

 decessor, the 4th considerably longer than l)road, 7th 

 about as long as broad, 8 — 10 rather transverse ; last joint 

 pointed, nearly twice as long as the 10th. Palpi yellow, 

 mandibles jjitchy. Head broad, quite as broad as the 

 thorax, coarsely and irregularly punctured, with a broad 

 im[)unctate space in the middle. Thorax about as long as 

 broad, a little narrowed behind, ■with two irregidar lines of 

 ten or twelve coarse pimctures along the middle, separated 

 by a rather broad, impunctate space, and with other 

 coarse, irregular punctures, especially numerous near the 

 anterior angles. Scutellum large, rather strongly pimc- 

 turod, with a narrow impunctate margin. Elytra broader 

 than the thorax, and about as long, greenish or bluish, 

 rather sparingly punctured. Hind body narrowed toAvards 

 the extremity, black, Avith the last two segments yellow ; 

 segments 2 — 5 moderately closelv and distinctly punc- 

 tured, 6th more finely, 7th very finely punctured. The 

 four front legs yelloAv, the hinder ones pitchy. 



The male has a shallow, broad notch in the middle of 

 the hind margin of the 7th segment beneath. 



l*an'i, Ega, St. Paulo, Kio Purus ; sixteen individuals. 



Obs. — 1 judge from the specimens before me that this 

 is a variable species ; the individual from Avhich the above 

 description is taken is a large male from St. Paulo, 

 having the head and thorax more coarsely punctured, and 

 the antennre more elongate than in the other individuals. 

 The individual from Hio Purus is a small female, having 

 the head and thorax sparingly piuictured. and is a little 

 smaller, narrower, and less depressed than the other sjjeci- 

 mens. The tAvo individuals from Para have the front !eo:s 

 black, or nearly so, and the antennre rather shorter, Avhile 

 one of them has the elytra of a pitchy colour, Avith blue 

 reflections. In the absence of any definite characters to 

 separate these forms, I have considered them all as one 

 species. 



7. Xtnithojnjgus nif/ripes, n. sp. Niger, nitidus, an- 

 tennis lusco-testaceis, elytris viridi-cyaneis, al)domine seg- 

 mentis duol)US ultimis flavis. Long. corp. o lin. 



Closely all led to X. dcpressus, and distinguished only 

 by the following characters. The head is smaller, being 



