FISHES OP NEW YORK 229 



lius dusky; that of the pectorals tinged with lemon jellow; ven- 

 trals dnskj'^ at the tip; anal pale; caudal pale except a narrow 

 dusky portion of the middle rays ; eyes pearly with golden iri- 

 descence. The maxilla reaches about to front of eye. The 

 adipose dorsal extends straight backward, and its base is cov- 

 ered with a sheath of small scales i% of an inch wide. The 

 gill rakers are 9 + 17, the longest | of an inch. Very small teeth 

 are present on the tongue. The eggs are minute. 



In a male example, 17:^ inches long, received Nov. 16, 1895, 

 from Upper Saranac lake and nearly spent, no tubercles could 

 1)6 seen on the scales; but several of the males from Canan- 

 <laigua lake had them well developed. There is a great differ- 

 ence in the development of the lingual teeth, some of our indi- 

 viduals showing only a trace of them, and it seems as if there 

 may be some relation between their condition and the sexual 

 maturity of the fish. For example, in a male 14 inches long, 

 sent from the fourth lake of the Fulton Chain Nov. 9, 1897, the 

 lingual teeth were present in a large patch; in three males, only 

 a little smaller but sexually immature, from Saranac lake Nov. 

 11, 1897, the teeth on the tongue could be perceived by the 

 touch only. The following measurements, in inches, and addi- 

 tional notes, were made from the fresh fish. 



MEASUREiMENTS 



Lengtli, including caudcal 



Length of middle caudal rays (from end 

 of scales) ' 



Lengtli of upper caudal lobe (horizon- 

 tally) 



Length of longest caudal ray 



Depth of body at dorsal 



Least depth of caudal peduncle 



'Length of head 



Diameter of eye 



Length of maxilla 



Distance from snout to dorsal origin. . . . 



Length of dorsal base 



Xength of longest dorsal ray 



