218 



BLACK-MARKED AXODUS. 

 - Anodus? notatus, 



PLATE XV. 



Schomh. Druu'ings^ No. GL 



We have marked the genus of this fish with a ? 

 as " Denies nuUi," in the generic cliaracters of 

 Spix, 'vvill not agree with it ; although, if the genus 

 is a good one in other respects, that character may 

 require modification. Our notes remark, " Do not 

 take bait; the specimen jumped into the canoe 

 when passing a sand-bank on the Rio Negro. The 

 scales are middle-sized, smooth, elliptical, and de- 

 ciduous; lateral line straight, along the centre of 

 the body ; teeth, a single row in each jaw ; tongue 

 round, fleshy; intestines form two flexures, and 

 have no appendices ; milt extending half the length 

 of the cavity of the abdomen ; air-bag double." — 

 The drawing, of the natural size, is in length six 

 inches and three-quarters to the centre of the fork 

 of the tail, and seven inches and a quarter to the 

 tips of the lobes. The head is pale olive, approach- 

 ink to yellowish on the opercle. The body above is 



