SYNOPSIS. 385 



C 20 : Caeca, 120. Upper jaw with about six teeth, 

 those on the tongue shorter and more numerous ; scales 

 large and deciduous ; colour of back and sides dusky blue ; 

 belly dirty white ; lower portion of the fins dark bluish- 

 grey ; irides silvery, pupil blue. Fai-nell, Ann. of Nat. 

 Mist., i. 161. C. clupioides, Lacipede, Hist. Nat. des 

 Poiss. 

 Sp. 137. C. Pollan. The Pollan. Length of the head rela- 

 tive to that of the body as one to three and a half ; depth 

 of body equal to the length of the head ; jaws equal, with 

 a few teeth, tongue with many teeth ; lateral line at first 

 curved downwards, then straight ; third ray of pectorals 

 longest. Fin-rays, D. 14 : P. 16 : V. 12 : A. 13 : C. 19. 

 Colour of the upper portion of the body dark blue ; 

 of the under side, silvery white ; dorsal, anal, and caudal 

 fins tinged with black towards the extremities ; pectorals 

 and ventrals clear and transparent, with the extremities 

 dotted with black ; pupil of the eye black. — Thompson, 

 Yarr. Brit. Fish., ii. p. 156. 

 Gen. LXIX. Scopelus. Body long and slender; first dor 

 sal placed far back, over the space between the ventral and 

 anal fins ; adipose fin obsolete. 



Sp. 1 38. S. Humholdtii. Argentine. Head short ; depth of 

 the body to the whole length as one to five and a half; 

 operculum very large, ju'eoperculum small : colour of the 

 sides silvery white, with a very resplendent lustre ; back 

 bluish black; lower edge of the belly steel-blue ; on each 

 side of the belly there is a continuous row of rounded 

 silvery dots, and above this another row extending back- 

 wards rather beyond the middle of the body. — Cuv. Reg. 

 An.; Yarr. Brit. Fish., ii. p. 161. Serpes Humboldtii, 

 Risso, Ich., p. 358, tab. x. f. 38. Argentina sphyrsena, 

 Argentine, Penn. Brit. Zool., iii. p. 432, pi. 76. 

 Fam. XVII. ChipeidcB. Body covered with scales; one dor- 

 sal, no adipose fin; mouth with few teeth, sometimes with none; 

 abdomen compressed, carinated, and generally serrated on the 

 tmder edge. 



