17 C> Mr. H. W. Bates on the Longicorn Coleoptera 



2. Oncideres Satyrus, n. sp. 



O. cylindricuSj fulvo-bninneus ; elytris guttis alhis paucis sparsis, 

 basi tuberculis nigris ; antennis validis ; thorace basi valde con- 

 stricto. Long. 10-12 lin. S 2 • 



Head in the $ much narrower than the thorax, in the $ as 

 wide as the widest part of the thorax, with broad plane front, 

 colour tawny brown, a black stripe below each eye. Antennae 

 about the length of the body in the female, a little longer in the 

 male, with the apical joint twice the length of the preceding; 

 they are robust in both sexes, but the four basal joints are 

 thicker in the <$ than in the $ ; colour black. Thorax with 

 transverse depressions; a conical tubercle on each side, and 

 much constricted behind the tubercle; brownish tawny, with a 

 fine, black, central, transverse line. Elytra cylindrical, brownish 

 tawny, sprinkled with a small number of minute white spots; 

 base and shoulders with a few polished rounded tubercles ; rest 

 of surface impunctate, smooth. Body beneath and legs thickly 

 clothed with tawny pile ; sides of breast chalky white. 



Para. Closely allied to O. vomicosus, Germar (Ins. Nov. 482), 

 but differing greatly in the maculation of the elytra, the spots 

 being small, few in number, and all distinct from each other. 



3. Oncideres f ulcus, n. sp. 



O. oblongo-subcylindricus ; thorace postice baud constricto, guttis 

 nigris quinque discoidalibus in linca transversa dispositis, tuber- 

 culo parvo laterali ; elytris modice elongatis, valde convexis, lscvi- 

 bus, guttis parvis albis sparsis, prope basin tuberculis utrinque 

 circa duodecim nigris. Long. 1 1 lin. 5 . 



Closely resembles 0. Satyrus ; but the body is proportionately 

 shorter and broader in the female than in the corresponding sex 

 of that species ; the thorax is shorter, and shows no constriction 

 near the base; the elytra are uniformly convex and impunctate, 

 and there are very few tubercles near the base, only two con- 

 spicuous ones on each side of the scutellum, and a small number 

 under each shoulder. The colour is entirely ochreous tawny, 

 with the exception of five small spots placed in a transverse row 

 across the thorax, the black elytral tubercles and a small number 

 of widely separated, but tolerably uniformly distributed, white 

 specks over the elytra. The antenna? are somewhat darker, and 

 and there is a very distinct oblong chalky spot on each side of 

 the breast. 



Tapajos. 



4. Oncideres Diana, Olivier. 



Lamia Diana, Oliv. Ent. 6". p. 107. f. 168. 



O. subcylindricus, griscus ; elytris quarta parte basali dense ac mi- 



