StaphxjlimdcB of the Amazon Valley. 183 



Head rather large, fully as broad as thorax or elytra, 

 oblong-quadrate, the sides straight, the hind angles a little 

 rounded ; it is on the upper side rather finely and sparingly 

 punctured. Thorax as long as broad, narrowed behind 

 and rounded at the sides, the upper surface deeply im- 

 pressed, finely and sparingly punctured, an oblong space 

 on the disc impunctate. Elytra quite as broad as, and 

 longer than the thorax ; like it, and the head, of a 

 pitchy colour, closely and finely punctured. Hind body 

 parallel, pitchy, with the extremity yellow, evenly, mode- 

 rately finely, and moderately closely punctured. Legs 

 yellow. 



Ega ; one specimen. 



5. Holisus discedens, n. sp. Niger, nitidus, pedibus 

 piceis ; capite thoraceque parce fortiter punctatis ; elytris 

 crebre subtiliter punctatis ; abdomine minus depresso, sat 

 crebre punctato. Long. corp. 2^ lin. 



Palpi pitchy ; 1st and 2nd joints of antennae pitchy 

 (the rest wanting). Head black, quite depressed, quite 

 straight at the sides and vertex, the hind angles rounded ; 

 it is rather broader than the thorax or elytra, and bears 

 coarse and distinct but not dense pimctures. Thorax 

 short, about long as broad, rounded at the sides, and a 

 good deal narrowed behind; the front much rounded, so 

 that the front angles are quite rounded, with a series of 

 punctures on each side of the middle, leaving between 

 them a broad, impunctate space, and outside these with 

 some punctures, which are most numerous behind the 

 middle ; it is black and shining, and shows at the base, in 

 the middle, a very short and fine channel. Scutellum 

 rather coarsely punctured, the punctures disappearing 

 towards the apex. Elytra much longer than the thorax, 

 of a pitchy-black coloui-, rather finely and closely punc- 

 tured, the punctures rather closer at the extremity than at 

 the base. Hind body elongate and narrow, less depressed 

 than the front parts ; the dorsal })lates are convex, so that 

 it is subcylindric, and the lateral margins are extremely 

 fine ; it is a good deal narrowed towards the extremity, 

 and also has the basal segment slightly narrower than the 

 following ones ; it is quite black in colour, and is rather 

 coarsely but not altogether densely punctured. The legs 

 are pitchy. 



In the individual described, which I believe to be a 



