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posea on a single line at each jaw ; interior of the mouth and 

 tongue smooth ; the posterior edge of the pra^operculum is emar- 

 ginated, with its angle quite rounded ; this edge is armed with a 

 number of short acute spines, each of which extends on the 

 prseoperculum, and gives it the aj)pearanee of being radiated ; 

 the operculum extends in a long, obtuse, flat point over the base 

 of the pectorals, and its lower limb is sometimes rather denticu- 

 lated ; six branchiostegals ; the body is covered with rather 

 small scales, which are marked with concentric lines, and fall very 

 easily ; the lateral line runs over about ninety-three scales, and 

 follows the profile of the bach at about one-fourth of its height, 

 and extends to the centre of the base of the caudal. On the dry 

 specimens its posterior part appears carinated ; below this line 

 there is a deep longitudinal sulcated line, which extends all 

 along the body at half of its height, and has the appearance of a 

 second lateral line ; the first dorsal fin is very low, and begins 

 over the insertion of the pectorals ; it is formed of six small 

 feeble spines, connected together by a very low membrane ; the 

 second dorsal is much higher ; it is composed of two spines and 

 thirty soft rays ; the first spine is much shorter than the second, 

 but considerably longer than any of the first dorsal ; the first 

 rays of the dorsal are nearly twice as long as the second spine, 

 but the following decrease until the seventh or eigth, when the 

 succeeding ones maintain about the same height ; the total 

 length of the second dorsal is contained two and one-third times 

 in the total length of the body, and the distance from its end to 

 the centre of the caudal is contained five and one-third times 

 in the total length ; the caudal is deeply formed, and has 

 twenty- one long rays and several short ones on each side ; the 

 most external of these does not attain the extremity of the fin ; 

 the anal, having the same form as the second dorsal, is formed of 

 two very small conical spines, and of two slender ones ; the first 

 is much shorter than the second, and this is only one-half of the 

 following rays ; these number twenty-one ; this fin is much 

 shorter than the second dorsal, and is contained more than 

 four times the length of the body ; the ventral fin is rather 

 small ; it is inserted a little behind the base of the pectorals, and 

 the space behind it and the beginning of the anal is equal to the 

 length of the latter, and is formed of a rather long, fclender, 



