172 NORTHERN ZOOLOGY. 



adipose fin is placed at the commencement of the fourth quarter of the fish, including the 

 lobes of the caudal, and the anus is nearly twice as far distant from the snout as from the 

 latter, being consequently farther back than in S. alipes. Head less arched above, both in 

 profile and transversely, than in S. alipes : the mesial ridge and lateral porous curves are less 

 prominent, and there are no radiating lines above the orbit : the head forms less than a fifth 

 part of the entire length of the fish. The ovate orbit is the length of its axis and a half 

 from the tip of the snout, and three lengths and a half from the posterior edge of the gill- 

 cover, being proportionally nearer the snout than in S. alipes : six diameters of the orbit are 

 equal to the extreme length of the head. In this, as in S. alipes, the upper surface of the 

 head measures just the same with the distance of the posterior edge of the suboperculum from 

 the centre of the pupil, while in S. Rossii the top of the head is half a diameter of the orbit 

 shorter. The nostrils are a little nearer to the eye than to the tip of the snout. The upper 

 jaw is shorter than in S. alipes. The snout is rounded, and there is a small edentate space 

 for the reception of the slightly-knobbed extremity of the lower jaw, which is a little shorter 

 than the upper one when the mouth is shut, and scarcely surpasses it when the jaws are open. 

 The intermaxillaries are less than one-third of the length of the labials ; and the latter are 

 shorter, stronger, and less curved than in S. alipes. The total length of the lower jaw exceeds 

 the distance between the tip of the snout and nape by about two lines. 



Teeth as in S. alipes, the cluster on the knob of the vomer being, however, less prominent 

 and not so crowded : the form of the cluster is triangular, three teeth wide anteriorly, and 

 one tooth in the posterior angle. 



Gill-covers. — The opercular bones greatly resemble those of S. Rossii and alipes, though 

 the breadth of the operculum is less, being only half its height, and but just equal to the 

 greatest width of the preoperculum. The height of the suboperculum is half its length. There 

 are eleven aill-rays on the right side, and twelve on the left. 



Fins.— Br. 11—12; D. 14—0; P. 17; V. 10; A. 12; C. 19f. 



The fifth and sixth dorsal rays are the longest, the first being scarcely perceptible. The 

 attachment of the anal is equal in length to the space between it and the base of the caudal. 

 The adipose fin is opposite to the last rays of the anal. 



Scales tiled, small, roundish : truncated on the sides : smaller and more pointed on the 

 belly. There are 120 on the lateral line of a larger size, and about 270 in a row adjoining to 

 that line, or 19 in a linear inch under the dorsal: a vertical row there contains 92, of which 

 36 are above the lateral line, 42 betwixt it and the ventral, and 12 or 14 below the first ray 

 of the latter. 



Colour, according to Captain J. C. Ross, as follows : " Body above the lateral line deep 

 green, softening towards the belly, which is of a beautiful yellowish-red tint posterior to the 

 pectoral fin : throat and region of the pectorals whiie, slightly clouded by yellowish- red. 

 There are several rows of occellate red spots, confined principally to the space between the 

 lateral line and yellowish-red of the belly : they vary in size, the largest being as big as a pea. 

 Dorsal fin coloured like the back. Under fins dusky-red, the anal paler, and the first rays of 

 the pectorals, ventrals, and anal white." 



