of the Amazon Valley. 13 



from which the Sporeti differ little, the two extremes are in 

 reality closely bound together bycounecting links, and, notwith- 

 standing the almost endless multiplication of speciSc forms, 

 have not diverged widely from a common plan of structure. 

 The genus Palame is readily distinguishable from all allied 

 genera by the hairy coxae and sterna of the male, and the 

 absence of ovipositor in the female. 



Palame crassimamu, n. sp. 



P. oblonga, subcylindrica, nigro-oliTacea, sericea : thorace rittis quin- 

 quc cinereis : elytris late subsinuato-truDcatis, plagis cinereis 

 nigro maculatis. Long. 3| lin. (J $ . 



Head black ; forehead with three ashy lines, and outer orbits 

 of the eyes ashy. Antcnn:e black, bases of joints paler, those 

 of the fourth to the sixth joints ashy. Thorax convex, above 

 silky black, with five ashy vitts, the two lateral ones on each 

 side, in some examples, being interrupted, and in others con- 

 fluent. Klytra slightly narrowed from base to apex; apex 

 broudly subsinuate-truncate, angles of the truncature obtuse, 

 surface silky olive black, and with large ashy patches speckled 

 with black ; sides speckled with ashy tomentum : besides the 

 setiferous punctures over the whole elytra, the basal part has 

 a number of simple punctures. Body beneath ashy. L^s 

 black, with ashy pile ; tarsi and under surface of body naked in 

 the feniale ; in the male the fore and middle tarsi arc dilated and 

 fringed with hairs, and have fulvous bru»h-like palms, the coxc 

 and middle of the breast and abdomen being thickly clothed 

 with brownish hairs. 



Generally distributed throughout the Amasons region, on both 

 sides of the river. It is found on slender branches of fallen 

 trees in the forest. The terminal segment of the abdomen of 

 the female is scarcely visible beyond the tips of the elytra. 



Genus Toron jsus, nor. gen. 



Body oblong, somewhat convex. Head and thorax of nearly 

 equal breadth, and much narrower thai the elytra. Antenna; 

 greatly elongated ; joints long and slender, sparingly furnished 

 with set^e both above and beneath. Thorax with a shght pro- 

 tuberance on the sides a little behind the middle, in place of the 

 lateral spines. Elytra without setae, and free from ridges and 

 lateral carinae. Terminal segment of the abdomen in the males 

 with both dorsal and ventral plates more or less notched at the 

 tip. Ovipositor of the females greatly elongated, and generally 

 exserted beyond its sheath, tubular; aorsal plate of the terminal 

 abdominal segment (constituting the sheath) slender and pointed, 

 ventral deeply cleft at the apex. Legs moderately slender ; 



