BRANNER-AGASSIZ EXPEDITION TO BRAZIL 1 75 



same. Teeth as in S. rubriplnne^ distinctly outlined and slightly pro- 

 truding convexly, the marginal teeth in each jaw forming an irregular 

 cutting edge ; no posterior canines. Subocular region and angle of 

 preopercle covered with profusely branching canals. A series of five 

 large scales below the eye, of which 3 are on the cheeks. The ex- 

 posed portion of the eye 5^, the orbit 4I, in head. 



The tubes of the lateral line branch profusely and cover the scales. 

 This branching occurs sometimes pinnately from a horizontal stem, 

 sometimes palmately from the base of the scales. The primary 

 branches are sparingly forked. 



The dorsal spines are slightly stiffer than in S. rubriplnne^ but are 

 flexible. The longest equals \ length of head. The caudal is lunate. 

 The pectorals are short, not reaching the vertical from the tips of the 

 ventrals, i|- in head. 



Color uniform dark purplish, apparently including all the fins ex- 

 cept the caudal, which appears more nearly grayish. The middle 

 caudal rays have a light margin, and the outer ones are alternately 

 light and dark, as in kS". rubi'ipinne. I cannot make out, however, 

 that these are the beginnings of light and dark cross-bars which, in S. 

 rubripinne^ traverse the fin. 



The species seems to differ from S. rubriplnne in the greater depth 

 of the body, in the more steeply rising anterior profile, which de- 

 scribes an even cvirve, in the shorter, blunter snout, which is but little 

 more than! the head, in the somewhat more complexly branching tubes 

 of the lateral line, and in the color. 



The preceding notes are based on an adult specimen, 306 mm. 

 long. A young specimen, 145 mm. long, shows a general reddish- 

 gray tint, but is much lighter and more variegated in coloration. The 

 pectoral is distinctly orange-red at base after immersion for some time 

 in formaldehyde and alcohol. The caudal is shallowly concave, with 

 produced points. It shows a distinct lighter margin and is very ir- 

 regularly cross-barred with light and with dark reddish-brown. The 

 dorsal is variegated, as in S, rubriplnne. The tubes of the lateral 

 line are typically branched. 



Two specimens, each 190 mm. long, are darker and more uniformly 

 vinaceous than the young one noticed. They seem to have been some- 

 what mottled with darker in life. All the fins are dark, of about the 

 same tint as the body. The dorsal shows^some obscure darker mark- 

 ings, without pattern, and the caudal has the irregular dark cross-bars 

 most distinct near the upper and the lower margins. There is a very 

 distinct narrow white border to the caudal. Other fins are uniform. 



