Occasional Papers of the Museum of Zoology 3 



1917, I7y2 miles N x E, on September 20, 1917, 14 miles NE 

 xE, and on September 21, 1917, 17 miles NE x N ^ N of 

 Thunder Bay Island. 



The body is fusiform, slightly more compressed than in other 

 members of the genus, and as in johannae and nigripinnis, 

 its only associates of the deeper waters, the depth is distinctly 

 greatest in front of the dorsal fin. This dimension in the type 

 specimen comprises 24% of the body length. At the occiput 

 the dorsal profile rises in a smooth curve over half the distance 

 to the dorsal and continues to the dorsal with only a slight 

 upward trend. From the dorsal the contour slopes gently to 

 the caudal peduncle. The ventral profile from the tip of the 

 mandible to the ventral fins runs like the opposite dorsal con- 

 tour, curving strongly downward and backward for two-thirds 

 its extent, and extending to the ventrals over its remaining 

 one-third in a line nearly parallel to the lateral lines. From 

 the ventrals to the anal the contour converges distinctly toward 

 the lateral line. The head is rather elongated, and is contained 

 4-0 [(3.7)3.8-4.1(4.3)]- times in the total length. Its dorsal 

 profile runs in a faint but distinct convex curve to a point 

 above the center of the orbit, and from thence to the occiput 

 is often more or less concave in its course. The premaxillaries 

 are directed forward and make an angle of about 50° with 

 the horizontal axis of the head. The snout is always longer 

 than the large eye, which is contained 3.9 [(3.6)3.8-4.1(4.3)] 

 times in the head. The maxillary is pigmented and extends 

 beyond the anterior edge of the pupil, but never to its center. 

 The mandible usually projects beyond the upper jaw. The 

 scales in the lateral line number 84 [(71)77-87(91)]; 84% 



- The ratios given in brackets are based on measurements of 120 

 paratypes ; the usual as well as the extreme range in variation is 

 given, the latter in parentheses. 



