CYBIUM FLAVO-BRUNNEUM— Smith. 



Pisces. — Plate XX. 



C. capite rubro-brunneo, mandibular lateribus tectricibusque brancbiarum argentio-lavatis ; corpore flavo- 

 brunneo ; squamis parvis indistinctis ; caudee carina acuta et distincta ; pinnis rubro-brunneis ; pinnis 

 spuriis supra quinque, infra quatuor ; pinna caudale profunde furcata. 



Longitudo ab apice mandibular ad apicem pinnee caudalis 24 unc. 



Colour.— The body is of a tint intermediate between light chesnut-brown 

 and yellowish brown, faintly and delicately reticulated from the margins of the 

 portion of the small scales, which is uncovered, being faintly semi-pellucid ; 

 the head and the fins deep-reddish brown, the sides of the lower jaw and 

 the surface of gill-coverts with a strong silvery lustre. The lower portion 

 of the sides and the under parts are lighter than the back, and distinctly 

 tinged with flesh-red. 



Form, &c. — Figure lengthened and subovate ; dorsal outline slightly 

 curved ; ventral outline considerably arched. Head compressed and conical ; 

 the top of the head nearly level and the under jaw slopped upwards, the lat- 

 ter rather longer than the upper, and at the point is truncated and much deeper 

 than the upper. The margins of the jaws are curved downwards to the 

 angles of the mouth, which are situated directly under the anterior edge of 

 the eyes; each jaw supports a row of teeth, and there are besides two large 

 fangs curving backwards a little behind the front of the upper jaw on the 

 anterior part of the palate ; the teeth of the upper jaw are very small and 

 cylindrical, about half a line apart, and slightly curved inwards ; those of 

 the under jaw are considerably larger, more apart from each other, and with a 

 like curvature inwards. Nostrils double, small, vertical, and about half an 

 inch apart, the one directly in front of the other, the hindermost nearly half 

 an inch before the anterior and upper edge of the orbit. Orbits large, some- 

 what circular. Postocular plate distinctly marked with longitudinal stria ; 

 the preoperculum superiorly with vertical stria, inferiorly slightly puckered ; 

 operculum radiated ; infraoperculum smooth, all covered with small some- 

 what circular scales ; the posterior edge of operculum semicircular and nearly 

 unbroken. The body covered closely with small delicate scales, but indis- 



