400 ]Mr. D. Sliarp's Contrihutiuns to the 



towards the base, and with two or three fine denticles ; the 

 disc with two indistinct longitudinal impressions. Elytra 

 much longer than the thorax, densely and indistinctly, but 

 not altogether finely punctured. 



Tapajos and Ega ; several specimens. 



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

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

 more elongate antenna?. INIy 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 ; tAvo of the individuals are considerably 

 darkei" in colour, so that the term "piceo-rufo" Avould more 

 correctly describe them, and one of these dark individuals 

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

 peculiar elongate pubescence ; which may, however, only 

 be wanting from the other individuals on account of their 

 being rubbed. 



5. Trogophloeus vicinus, n. sp. Rufus, capite fusco- 

 rufo ; antennis elongatis, articulis nullis transversis ; pro- 

 thorace transverso, lateribus subdenticulatis, versus angulos 

 anteriores bene rotundatis, dorso minus distincte bi-im- 

 presso ; elytris dense minus fortiter punctatis ; abdomine 

 apicem versus nitidulo. Long. corp. I5 lin. 



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

 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 

 Stapliylinidce 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 

 Falu(jria forms of the Aleocharini, and the structure of 

 the thorax is scarcely dissimilar from Avhat may be found 

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

 us a connecting link between the Oxytclini and Aleocha- 

 rini. The A. phinus I here describe is of special interest 

 as indicating in a certain manner what are the chang-es 

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

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



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