1885.] NATURAL SCIENCES OF PHILADELPHIA. 15 



aa. Origin of dorsal fin about midway between nostril and base 

 of caudal ; scales not crowded anteriorhy, their number 

 about 8-45-5 ; body rather more slender ; vertebrae 22+20 ; 

 interneural spine of first dorsal ray inserted between 

 thirteenth and fourteenth neural spines ; head moderate, 

 about 4 in length ; maxillary barbel very small ; eye high 

 up, about 4^ in head ; color bright metallic bluish on upper 

 part of body, becoming white below ; no black spot on base 

 of dorsal ; size comparatively large, reaching a length of 

 18 inches. bullaris. 3. 



1. Semotilus atromaculatus. Creek Chub, Horned Dace. 



Cyprinus atromaculatus Mitchill, American Monthly Magazine, ii, 



1817, 324 (Wallkill R.). 

 Leuciscus atromaculatus De Kay, N. Y. Fauna, Fishes, 1842. 210, 



plate xxxii, fig. 102; Storer, "Synopsis Fishes N. A., 1846, 409" 



(copied). 

 Semotilus atromaculatus Girard, Proc. Acad. Nat. Sci. Phila., 1856, 



204. 

 Leucosomus atromaculatus Cope, Proc. Acad. Nat. Sci. Phila., 1861, 



523. 

 Semotilus dorsalis Rafinesque, Ichth. Ohiensis, 1820, 49 (Kentucky) ; 



Kirtland, " Zoology Ohio, 1838, 169;" Kirtland, Boston Journal Nat. 



Hist., 1841, vol. iii, 181, 345. 

 Leuciscus dorsalis Storer, '-Synopsis Fishes N. A., 1846, 411." 

 Semotihis cephalus Rafinesque, Ichth. Ohiensis, 182 >, 49 (Kentucky); 



Kirtland, Zoology Ohio, 1838, 169 ; Kirtland, Boston Journal Nat. 



Hist., 1840, vol. iii, 345. 

 Leuciscus cephalus De Kay, N. Y. Fauna, Fish., 1842, 214; Storer, 



"Synopsis Fishes N. A., 1846, 409." 

 Leuciscus storeri Cuvier & Valenciennes, Hist. Nat. Poissons, vol. xvii, 



1844, 319 (N. Y.). 

 Leuciscus iris Cuvier & Valenciennes, Hist. Nat. Poissons, 1844, vol. 



xvii, 255, plate 496 (N. Y. and Carolina). 

 Leuciscus pulchtlloides Ayres, "Proc. Boston Society Natural History, 



1849, vol. iii, 157." 

 Leucosomus pallidusGira.nl Proc. Acad. Nat. Sci. Phila., 1856, 190 



(Antelope Creek, Arkansas); Girard, Pacific R. R. Rept., 1858, 251, 



PI. 61, fig. 6; Girard, Proc. Acad. Nat. Sci. Phila., 1858, 251-2 



(Antelope Creek, Arkansas). 

 Semotilus pallidus Cope, Cyprinidae Penn., 1866, 364 (Platte R.), (no 



description); Jordan, Manual Vertebrates, lsted, 1876, 279. 

 Leucosomus incrassatus Girard, Proc. Acad. Nat. Sci. Phila., 1856, 



251-2 (Near Choctaw Agency); Girard, Pacific R. R. Rept., 1858, 



252, PI. 61, fig. 1 (Near Choctaw Agency). 



