StapltylinidcE of the Amazon Valley. 185 



indistinctly pnncturecl. Hind body dusky yellow, ex- 

 tremely finely and densely punctured. Legs yellow. 

 Tapajos ; seven specimens. 



2. Diochus vicinus, n. sp. Rufescens, capite elytris- 

 que infuscatis, liis apice dilutioribus ; antennis tenuibus, 

 sat elongatis. Long. corp. 2 lin. 



Antenna? reddish, not thickened towards the extremity, 

 moderately long ; 3rd joint elongate and slender; 4 — 10 

 each is a little shorter, but scarcely visibly broader, than 

 its predecessor, the 10th quite as long as broad; lltli 

 joint much acuminate. Head small, infuscate-red. 

 Thorax bright reddish-yellow. Elytra about as long as 

 the thorax, infuscate-red, with the hind margin paler, 

 shining, Avith a few indistinct punctures. Hind body 

 dark red, densely and finely punctured. Legs yellow. 



Tapajos ; three specimens. 



Ohs. — This species is extremely similar to D. lonrji- 

 cornis, but the antenna? are less elongate. 



3. Diochus tarsalis, n. sp. l\ufo-fuscus, antennis pedi- 

 bnsque testaceis, illis sat elongatis ; tarsis anterioribus 

 dilatatis. Long. corp. 2 lin. 



Antenna3 moderately slender, reddish ; 3rd joint slender 

 and elongate; 4 — 10 each a little shorter, but scarcely 

 visibly broader, than its predecessor ; 10th about as long 

 as broad, 11th much acuminate. Palpi yellow. Head 

 infuscate-red, impunctate along the middle, Avith a few 

 punctures at the sides. Thorax infuscate-red, rather 

 brigliter in colour than the head, Avith the usual piinc- 

 tuation. Elytra about as long as the thorax, infuscate- 

 red, shining, Avith a fcAV impressed punctures. Hind body 

 densely punctured, blackish-red, Avitli the hind margins of 

 the segments red, the hind part of the tAvo slender and 

 elongate apical segments broadly red. Legs yellow, front 

 tarsi rather strongly dilated. 



Tapajos ; three specimens. 



Ohs. — This species is extremely similar to D. longi- 

 cornis and D. vicinus, but is rather darker in its coloura- 

 tion, and has the front tarsi a good deal dilated, Avhilc iu 

 the two species named they are nearly simple. 



4. Diochus Jlavicans, n. sp. Rufo-testaccns, nitidus. 



