378 :Mr. D. Sharp's Contrihuiions to the 



Amazons; a single indivitlual, "witliout more special 

 locality. 



Ohs. — I have also a specimen from Ega, which I believe 

 to be merely a variety of this species; the chief difference 

 it exhibits from the individual al)ove described consists in 

 the absence of any smooth space on the thorax. 



25. Stenus jn-oxinufs, n. s]). (Sect. II. I),Kr.) Niger, 

 puj)ra nitidus, ])arcius all)id()-pu})escens, antennis palpis(jue 

 testacei?, apice infiiscatis; ])cdil^usinfuscato-rufis,fem.oribns 

 tibiisquc basi quam apice dilutioril)iis ; capite thorace vix 

 latiore, bi-impresso ; elytris thorace longioribus, crebre 

 fortiter punctatis ; abdomine crebre fortiter punctato. 

 Long. Corp. 1 h lin. 



Antenna) reddish Avitli the club, dusky ; pali)i yellow, 

 but Avith the front half of the last joint distinctly darker. 

 Head small, not excavate, with two impressions between 

 the eyes, Avhich can scarcely be called sulci, as they do not 

 reach the vertex, and are also abbreviated in front by the 

 well-marked antcnnal tubercles ; only sparingly ])unctured, 

 the more elevated portions appearing as smooth spaces. 

 Thorax much narrower than the elytra, rather longer 

 than broad, slightly curved at the sides towards the front, 

 coarsely and rather closely somewhat irregularly punc- 

 tured. Elytra longer than the thorax, distinctly im])ressed 

 within the prominent shoulders, coarsely but not closely 

 punctured. Ilind body rather coarsely and moderately 

 closely punctured, much more finely at the extremity than 

 on the basal segments. 



Amazons (probably Tapajos ; a single male. 



Ohs. — This species is excessively closely allied to S. 

 parviceps, and differs therefrom only in slight characters ; 

 it is a little smaller than S. prn-vicepa, and has the antennre 

 distinctly shorter ; the sulci on the head are less distinct, 

 being more fovea-like ; the thorax is slightly narrower, the 

 elytrfl are rather shorter and rather more coarsely and less 

 closely punctured ; the punctuation of the hind body is 

 not quite so coarse and deep. The male characters seem 

 scarcely to differ. 



Megalops. 



Many points of the structure of these remarkable insects 

 remain to be ascertaijied, before the position and afiiuities 

 of the species can be satisfactorily decided on. Erichson 



