380 Mr. H. W. Bates on the Longicorns of the Amazon Valley. 



than the three remaining taken together. Ovipositor of the 

 female elongated (1^ line long), tubular; dorsal plate of the 

 terminal abdominal segment pointed, ventral plate notched; 

 ventral plate of the same segment in the males notched or 

 sinuated, dorsal plate entire or sinuated. 



The general appearance of the two species which I place in 

 this genus resembles that of the Anisopodi and of the larger 

 species of Lepturges ; but the thickness of the antennae and the 

 length of the ovipositor of the females forbid their being asso- 

 ciated with either genus. 



1. Paroecus ellipiicus, n. sp. 



P. ellipticus, tomento carneo-cinereo vestitus : elytris plaga magna 

 communi irregulari subtriangulari maculisque posticis nonnuUis 

 adjacentibus. Long. 3^-5 lin. d $ . 



Head clothed with ashy-fulvous pile ; forehead dusky. An- 

 tennae reddish ashy ; tips of most of the joints slightly thick- 

 ened. Thorax clothed with pinkish-ashy pile, sparingly punc- 

 tured on the disk and hind margin ; lateral spines conical, 

 oblique, placed very near to the hind angles, and separated from 

 the body of the thorax by a deep fovea. Elytra sinuate-truncate 

 at the tip, both angles of the truncature produced into a short 

 spine ; surface faintly punctured, thickly clad with pinkish-ashy 

 changeable tomentum, and having a large, common, dark brown 

 blotch of irregular triangular shape, the apex of which touches 

 the scutellum, and the base (behind the middle of the elytra) 

 broken into two or more elongate spots followed by an oblique 

 spot (on each elytron) of the same hue lying nearer to the apex. 

 Body beneath reddish; sides of breast dusky. Legs dull reddish, 

 sparsely clothed with ashy pile. Apical ventral segment in the 

 males deeply notched, dorsal entire. 



Fonte Boa, Upper Amazons, on fallen trunks of gigantic trees 

 of the order Leguminosae. The pupae were found in numbers, 

 lying in oval chambers formed by the larvae between the bark 

 and the wood. 



2. Paroecus rigidus, n. sp. 



P. oblongo-ellipticus, parum convexus, tomento cinereo vestitus : 

 thorace fusco notato : elytris lateribus fuscis, cinereo maculatis. 

 Long. 4^ lin. S . 



Head clothed with ashy-fulvous pile, forehead dusky. An- 

 tennae reddish, clothed with ashy pile. Thorax rather strongly 

 punctured on the disk; lateral spines conical, oblique, placed 

 very near the hind angles ; ashy, varied with small, oblong fus- 

 cous spots, two of which form an interrupted vitta on each side 

 of the dorsal line. Elytra strongly sinuate-truncate at the tip, 

 both angles of the truncature produced into spines, the external 



