FISHES OF NEW YORK 335 



ray; dorsal origin far in advance of anal origin, longest dorsal 

 ray five elevenths of length of head; anal base five eighths a& 

 long as dorsal base, longest anal ray one third of length of head; 

 least depth of caudal peduncle contained three and one fifth 

 times in length of head, the lower caudal lobe two sevenths of 

 total length without caudal. D. 12; A. 8. Scales before dorsal 

 30; before ventrals 25; between dorsal origin and lateral line T. 



Color brown above, silvery below; on each scale on the upper 

 part of the body a darker brown spot near its posterior 

 extremity, which gives the appearance of a dark brown streak 

 along each row of scales; pectorals uniformly brown, or greenish 

 brown; ventrals dusky, nearly black mesially, the posterior part 

 of the fin still darker; no dark markings on dorsal or anal fins; 

 caudal dusky, plain. 



Atlantic ocean, two specimens known, both examined by Dr 

 Jordan, from whose description the above was taken. One indi- 

 vidual was secured by Samuel Powell at Newport E. I.; the other 

 was obtained by Dussumier in the Atlantic ocean and by him 

 presented to the Museum of Natural History at Paris. This^ 

 example is 9 inches long. 



Order hemibranchii 



Half gills 



Family gj^sxerosteidj^e: 



Sticklehaeks 



Genus eucalia Jordan 



Fresh-water sticklebacks, feebly armed, the skin not mailed^ 

 the dorsal spines few and nondivergent, the gill membranes 

 forming a free fold across the isthmus, pubic bones fully united- 

 One species known. 



168 Eucalia inconstans (Kirtland) 



Brook Sticklelmck 



Gastei^osteus inconstans Kirtland, Bost. Jour, Nat. Hist. HI, 273, pi. II,. 

 fig. 1, 1841, brooks of Ti'umbull County, Ohio; Stoker, Syn. Fisli. 

 N. A. 64, 1846; Bean, Bull. 15, U. S. Nat. Mus. 130, 1879; Jordan: 

 & Gilbert, Bull. 16, U. S. Nat. Mus. 394, 1883. 



