of the Amazon Valley. 383 



gular spot on the disk of each towards the apex, and in most 

 specimens a small lateral streak on the edge of the lateral carina 

 a little behind the middle; this latter, however, never extends 

 towards the disk of the elytra, as does the similarly placed spot 

 in A.a7'achnoides, A. cognatus, and^. sparsus. A.phalangodes also 

 differs from its relatives in the shape and direction of the lateral 

 thoracic spine, this being large, robust, and prominent, directed 

 obliquely towards the edge of the humeral angle of the elytra, 

 and not standing at right angles to the side of the thorax, as in 

 A. arachnoides, or having its point directed in continuation 

 of the thoracic outline, as in A. cognatus. Both angles of the 

 truncation of the elytra are mucronate. 



The species occurred, sometimes abundantly, on the boughs 

 of fallen trees, in moist hollows of the forest at Ega, Upper 

 Amazons. I could not ascertain the special use of the elongated 

 hind legs of the male. Like all the species of this and the allied 

 genera, the insects pass their lives on the bark, their larvae feed- 

 ing and undergoing their transformations between the bark and 

 the wood, and the perfect insects rambling on the outside of the 

 fallen boughs, on which, after copulation, the females deposit 

 their eggs. 



In the collection of Mr. Bakewell there is a specimen of this 

 species from Cayenne, differing from Upper-Amazons examples 

 only in the dark-brown points of the elytra being a little more 

 distinct and encircled with grey. 



2. Anisopodus arachnoides, Serv. 

 Anisopus arachnoides, Serville, Ann. Soc. Ent. Fr. iv. p. 31. 

 A. oblongus, griseus, sericeus, fusco punctatus : thoracis spinis late- 

 ralibus distinctis porrectis : elytris apice modice spinosis ; tuberculis 

 centrobasalibus hirsutis ; lateribus atro-fuscis, maculis tribus adja- 

 centibus, una pone medium, irregulari, majore : pedibus posticis 

 vix elongatis. Long. A^-Q lin. 



Head brown. Antennae pitchy red, tips of joints (from the 

 third) dusky. Thorax greyish, with two black spots on the fore 

 part of the disk j sparsely punctate ; the lateral spines standing 

 out at right angles from the sides. Elytra transversely sinuate- 

 truncate at the apex, the inner angle of the truncation pointed, 

 the outer moderately prolonged as a spine; the surface is grey, 

 with scattered black points and a black pencil of hairs over the 

 centro-basal tubercles : the deflexed sides are dark brown and 

 silky, and, above, this colour extends in three irregular spots — 

 one near the base, one after the middle reaching to the disk of 

 the elytron, and one smaller near the apex. The underside of 

 the body is silky ashy. The legs are dusky, ringed with grey. 

 The hind legs of the male are only slightly elongated. 



19* 



