1. SALMO. 63 



together with the diameter of the eye, its greatest width being about 

 one-half of the same. The lower jaw is slightly bent upwards, and 

 is without hook. 



The teeth of the mandible, intermaxillary, and palatine bones are 

 larger than those of the maxillary ; the vomerine teeth are disposed 

 in an almost completely double series. The interorbital space is flat, 

 with a rather elevated median ridge, the eye being placed somewhat 

 below the upper profile ; the width of this space is equal to one-half 

 the length of the postorbital part of the head, or two-thirds of that of 

 the maxillary bone. 



The posterior margin of the praeoperculum is convex, the lower 

 limb being rather indistinct ; the posterior margin of the operculum 

 is straight, and forms a right angle with the lower limb. A line from 

 the upper end of the gill-opening to the angle of the operculum is a 

 little longer than a line from that point to the lower anterior end of 

 the suboperculum. The suboperculum is nearly thrice as long as 

 broad. The distance of the dorsal fin from the occiput, if measured 

 back from behind that fin, reaches to midway between the adipose 

 and the root of the caudal fin. The dorsal fin is a little higher than 

 long, and consists of thirteen rays, the first three being rudimentary, 

 the fourth simple, and the fifth and sixth branched, and the longest 

 of the fin. 



The anal fin is not quite twice as high as long, and consists of 

 eleven rays, the two first being rudimentary, the third simple, the 

 fourth the first branched ray, and the sixth the longest of the fin. 



The pectoral fin is one-fourth of an inch longer than the post- 

 orbital portion of the head, or than one-half of its distance from the 

 ventral ; the ventral fin is much shorter, and reaches two-thirds of 

 the distance from its root to the vent ; its outermost ray is in the 

 vertical from the tenth of the dorsal. Caudal nearly truncated, with 

 the lower lobe rounded. 



There are 124 transverse series of scales, counted immediately above 

 the lateral line ; the series descending obliquely backwards from the 

 origin of the dorsal fin to the lateral line has twenty-six scales ; that 

 from the hinder end of the adipose forwards to the lateral line has 

 sixteen scales ; there are twenty-two longitudinal series between 

 the lateral line and the root of the ventral. Scales rounded, without 

 median ridge. 



Back and sides greenish brown, belly brownish white ; numerous 

 reticulated black spots about the size of four scak s are scattered along 

 the sides above and below the lateral line. A series of orange- 

 coloured spots runs along the lateral line, and others are scattered 

 below it. Opercular bones with many large, round, black spots. 

 Dorsal with densely crowded, oval, black spots in several series, and 

 with a black and yellow supero- anterior margin ; anal dusky, with 

 a broad black and yellow margin anteriorly ; pectorals and ventrals 

 with a blackish tinge, the latter with an outer black and yellow 

 margin ; caudal blackish. 



Pyloric appendages forty-four. 



