256 PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 



Sahno stagnalis is described in Fauna Grcenlaudica, 1780, p. 175, as 

 follows : 



" A salmon of a brownish color above, pale below; body subterete, 

 the upper jaw the longer. The Greenland name is Ulallulal-. 



" Description.— B. 12 ; D. 14; P. 14 ; Y. 10; A. 10 ; 0. 21. Length, 17^ 

 inches. This is much larger t-han the precediug species [S. aJpinus]. 

 The body is somewhat rounded and elongate, becomiug very slender 

 behiud the vent towards the extremity of the tail, where it expands 

 slightly above and below into the caudal fin, of which the base is more 

 compressed. Head large, oblong, ovate with flat sides, crown prom- 

 inent, snout somewhat pointed ; nostrils two on each side in front of 

 eyes, their openings contiguous, wide ; the anterior is the smaller, cir- 

 cular, the posterior larger, almost triangular; opercles large, smooth, 

 and double, as in the precediug species ; upper jaw longer than the 

 lower; the snout projecting by 2 lines. Both jaws with toothed mar- 

 gins ; the upper is also toothed on the posterior part which extends be- 

 yond the lower jaw. Palate with two rows of closely-placed teeth, to 

 which is added a third but short intermediate row anteriorly ; tongue 

 long, somewhat obtuse, the margins with about twenty or more teeth. 

 Teetn all strong, curved, and sharp. The first dorsal begins slightly in 

 advauce of the veutrals ; rays 2 inches long and almost equal in length; 

 the posterior adipose fin placed behind the anal, short, falcate, with 

 rounded apex. The pectoral fins are slightly longer than the dorsal, 

 pointed ; the three upjier rays of increased length, the remaining ones 

 gradually becoming shorter. Ventrals similar to the pectorals, but 

 slightly shorter, placed half-way between the gills and the adipose fin. 

 Anal fiji terminates opposite the adipose fin ; shorter than the others, 

 the rays becoming gradually shorter posteriorly ; caudal fin large, sub- 

 bifurcate. Color above and of dorsal fins brownish-black ; sides pale, 

 white below. All the lower fins grayish-white, with white bases. Flesh 

 pale. I could observe no spots. 



This second specimen was in a dried state ; it was not possible to ob- 

 tain a live example." 



The specimens under examination have the body elongate, not much 

 compressed, caudal peduncle slender. The head is moderate, slightly 

 raised mesially ; the interorbital space broad, its width contained about 

 3 times in the length of the head ; the snout is pointed, its length con- 

 tained about 4 times in that of the head. The jaws are subequal; 

 the maxillary, long and narrow, extends beyond the vertical through 

 posterior margin of eye, and seems to be somewhat shorter in the female 

 than in the males. Eye rather small, its diameter being contained 6f 

 to 7 times in the length of the head. The nostrils are close together in 

 the horizontal through the upper margin of the eye and at a distance 

 from the center of the pupil equal to their distance from the tip of the 

 snout. The anterior nostril with a circular flap, the posterior triangular. 



