400 'Mv. 1). Slj#f)\s Cuiitribi(liu7is to the 



towards the base, and witli two or tliree fine denticles ; tlie 

 disc with two indistinct h)n<»itudinal impressions. Klytra 

 much lono;cr than the thoi-ax, densely and indistinctly, but 

 not altogether finely pmictured. 



Tapajos and Kga ; several specimens. 



Obs. — This species, though very closely allied to T. 

 lutifrons, is larger, and may be readily distinguished by its 

 more elongate antennae ISIy description is drawn entirely 

 from one of" the Tapajos specimens, for I am not at all 

 sure that I have not before me two or three very closely 

 allied species ; two of the individuals are considerably 

 darker in colour, so that the term "piceo-rufo" would more 

 correctly describe them, and one of these dark individuals 

 shows, near the front angles of the thorax, a patch of 

 l)eculiar elongate pubescence ; which may, however, only 

 be wanting from the other individuals on account of their 

 being rubbed. 



5. Trogopldoeus vicinus, n. sp. Eufus, capita fusco- 

 riifo ; antennis elongatis, articulis nullis transversis ; pro- 

 thorace transverso, lateribus siibdenticulatis, versus angulos 

 anteriores bene rotundatis, dorso minus distincte bi-im- 

 presso ; elytris dense minus fortiter piinctatis ; abdomine 

 apicem versus nitidulo. Long. corp. If lin. 



This species is extremely closely allied to the T. Jdlaris, 

 but it has the thorax a good deal more rounded towards 

 the front angles, and the part of the head behind the eyes 

 is less distinct and less prominent. In other respects I see 

 scarcely anything to distinguish the two species. 



Amazons ; a single specimen, without special locality. 



Apocellus. 



This genus I consider one of the most interesting of the 

 Stap]iyli)iid(c of the New World. It at present contains 

 six species, found both in North America and South 

 America. The facies of the species is greatly that of the 

 Falucjria forms of the Aleodiarini, and the structure of 

 the thorax is scarcely dissimilar from what may be found 

 in some of the Aleocharini ; the genus, therefore, aflbrds 

 us a connecting link between the Oxytelini and Aleocha- 

 rini. The A. ■planus I here describe is of special interest 

 as indicating in a certain manner what are the changes 

 that have taken place in the head of the Aleocharini, so 

 as to give rise to the appearance of a different insertion of 



