0CX0G0X0TES. 



161 



jecting laterally and medially into a distinct obtuse angle ; the sur- 

 face of the thorax is complanate, and depressed on either side in front; 

 at the base a broad and distinct (but not sharply defined) shallow de- 

 pression extends obliquely upwards nearly to the humeral angles ; 

 thickly pubescent. Scutettum triangular, hardly separated from, and 

 on the same plane as, the elytra ; fuscous, pubescent. Elytra broad, 

 somewhat depressed, finely punctate-striate, fulvous, and clothed 

 throughout, like the thorax, with short golden pubescence. An- 

 tenna; filiform; the first joint dilated, and deflected outwards; the 

 second short, ovate, and attenuated at the base ; the third as long as 

 the first ; in colour flavous, with the fifth to the eighth joints darkly 

 fuscous, and the ninth to the eleventh pale flavous. Legs entirely 

 fuscous, the posterior femora being clothed with pubescence. 



District of the Eiver Amazon. In the collections of Messrs. Baly, 

 Bates, and the Rev. H. Clark. 



2. Octogonotes thoracicus. 



Guerin-Mcn. (Iconogr. 1820-38, p. 305. pi. 40 bis, fig. 0). 

 Dej. Cat. ed. 3. p. 407. 



0. oblongo-ovalis, parallelus, subdepressus, fasco-tomentosus ; capite 

 abbreviate), rufo-ferrugineo ; ihorace transverso, marginato, antice 

 subcoeirctcito,puhescenti, rufo-ferrugineo ; elytrispunctato-striatis, 

 tomentosis, fuscis vel {a tergo) nigro-fuscis j antennis nigris ; 

 pedibus fidvis, nigro adumbratis. 



Long. corp. 4i lin., lat. 1-| lin. 



Oblong-oval, subparallel, somewhat depressed, tomentose. Heeul 

 short, not produced in front ; eyes large, fusco-ferrugineous, distant, 

 situated at the base of the head, but not extending laterally as far 

 as the Hue of the lateral margin of the thorax ; between the eyes 

 (and immediately above the insertion of the antennas) are two small 

 tubercles ; labrum dark fuscous ; above the insertion of the maxil- 

 lary palpi, on either side, is a dark fulvous spot ; the surface of the 

 head is somewhat rough, slightly pubescent, rufo-ferrugineous. 

 Thorax transverse ; the sides marginate ; the anterior angles acute ; 

 behind the anterior angles is a small marginal projection (which is 

 more or less tooth-like in appearance in different examples) ; the 

 anterior angles are obliquely truncate ; a broad postmedial depres- 

 sion (most distinct at the base) inclines on either side obliquely 

 towards the anterior angles ; the surface of the thorax is rufo-fer- 

 rugineous, clothed throughout (and especially near the base) with a 

 fine golden pubescence. Scutettum distinct, large, slightly raised 



M 



