BROWN DORSAL-STRIPED DORAS. 163 



pose fin small, situate nearly over the anal ; ventral 

 and anal fins placed near each other; dorsal and 

 pectoral spines much serrated ; a bony process on 

 the body, near the head, which the dorsal spine lies 

 against when it is closed. The opercles have smooth 

 edges, with striated surface ; the cirrhi are long and 

 white. It much resembles the two last in its habifs 

 and retreats, and is not much used for food." (The 

 " two last" refer to Nos. 41 and 40, Schomb. Draw- 

 ings, also our two last described specimens). 



We have still the drawing of another small fish 

 with the second dorsal fin, which will enter into 

 this genus. 



Doras brunnescens. Brown Dorsal-striped 

 Doras. — Macusi, Kiru-kiru ; L. Geral, Bayacu. — 

 Schomh. Draimngs^ No. 18. — The drawing of this 

 fish, though characteristic, is scarcely sufficiently 

 detailed to work from; for this reason we have 

 named it as distinct from the D. armatulus^ Yalenc, 

 to which it approaches in colouring, but not at all 

 in habits. From the drawing we cannot count the 

 costal plates, and the formula of the fins unfortu- 

 nately have been omitted. The formula of Valen- 

 ciennes is given underneath, with his description, 

 which can be compared with the notes of Mr. 

 Schomburgk. 



Z). armatulus^ Yalenc. 

 " Cost. pL 28 or 29— D. 1/6_P. 1/6_V. 7— A. 12_C. 17." 

 " Ce poisson est d'un brun noir ; un band fauve- 

 clair commence au-dessus de I'oeil, transverse le cote 



