238 PROCEEDINGS OF THE ACADEMY OF [1886. 



row at nape. Dorsal spines about equal to one-half diame- 

 ter of eye, the first just reaching base of second; these 

 spines are recurved and slightly serrate on their edges ; 

 the fifth spine is more recurved and higher than the others. 

 Soft dorsal very high in front, its longest ray about equal 

 to snout and half the orbit ; the last ray equals half the 

 orbit ; caudal short and broad ; anal inserted below inser- 

 tion of second dorsal, similar to and coterminous with it. 

 Pectorals short and broad, their length equal to their 

 breadth at tips. Vertebrse (cayuga), 14 + 18. Brownish with 

 lighter blotches and black points. Males in spring black, 

 tinged with red on the jaws and snout. 

 b. Ventral spines equal to f length of innominate bones ; post- 

 pectoral plate large, variable, mostl}' V-shaped. D. IV-I, 

 10 ; A. I, 10. Inconstans. 2. 



bb. Ventral spines short, but longer than innominate bones ; 

 post-pectoral smaller than in preceding, mostly f|-shaped. 

 D. IV-I, 10 ; A. I, 10. cayuga. 2 (a). 



bbb. " D. Ill or IV-I, 6. A. I, G." (?). pygmsea. 2 (6). 



2. EUCALIA. 

 2. E. inconstans. 



Gaaterosteus inconstans Kirkland, Boston Journal Nat. Hist., iii, 273, 

 1841 (TmmbuU Co., Ohio); Dekay, Nat. Hist. N. Y., 68, 1842 

 (Name only); Cope, Proc. Acad. Nat. Sci. Pkila., 1865, 81 (Suker- 

 toppen, Greenland); Jordan & Gilbert, Syn. Fish. N. A., 394, 1883. 



Apeltes inconstans Jordan, Fish of Indiana, 31, 1874 (Northern 

 Indiana). 



Eucalia inconstans Jordan, Man. Vert., ed. i, 249, 1876 (Name only); 

 Jordan & Copeland, Checklist N. A. Fresh-water Fish, 141, 1876 

 (Name only); Nelson, Bull. Ills. Tab. Nat. Hist., i, 42, 1876 (Copied); 

 Jordan, Bull. Ills. Lab. Nat. Hist., ii, 58, 1877 (Small Streams of 

 Northern Ills.); Jordan, Proc. Acad. Nat. Sci. Phila., 1877, 65; 

 Jordan, Cat. Fresh-water Fish N. A., 441, 1878 (Name only); Forbes, 

 Bull. Ills. Lab. Nat. Hist., iii, 68, 1880 (Northern Ills.^. 



Gasterosteus microptis Cope, Proc. Acad. Nat. Sci. Phila., 1865, 81 

 (Fort Riley, Kansas); Sauvage, Revision des Epinoches, 28, 1874 

 (Copied). 



Eucalia micropus Jordan & Copeland, Checkli.st N. A. Fresh-water 

 Fish, 141, 1876 (Kansas). 



Oasterosteus gloMceps Sauvage, Revision des Epinoches, 35, 1874 

 (North America). 



E^icalia inconstans, var. pygmwa Jordan, Geol. Report Ohio, 998, 1882 

 (Central Ohio ; Trib. of Great Lakes). 



