.1034 Bulletin 47 ', United States^ National Museum. 



(Named for Dr. Albert C. L. G. Giinther, Keeper of the British Museum 

 of Natural History.) 



? Alvordius maculatus,* GIRARD, Proc. Ac. Nat.Sci. Phila., 67, 1859, Fort Gratiot, Lake Huron. 

 Etheosloma gii.ntheri, EIGENMANN & EIGENMANN, Amer. Nat., Nov., 1892, 962, Winnipeg; Souris 



River, (Coll. Eigenmann); Cedar River, Cedar Rapids, Iowa. (Coll. Meek.) 

 Percina guentheri, BouLENGER, Cat., i, 61. 



1423. HADROPTERUS PELTATUS (Stauffer). 



Head 4; depth 5f ; eye 4. D. XIII-12; A. II, 10; scales 6-52 to 56-9. 

 General form of Hadropterus aspro, but stouter and with larger scales ; 

 head rather heavy, the snout bluntish in profile, about as long as eye ; 

 lower jaw slightly included, maxillary reaching just past front of eye, its 

 length 3| in head ; gill membranes scarcely connected. Cheek usually 

 wholly naked (peltatus), but often with smooth embedded scales (nevi- 

 sensis). Opercle with about 3 small scales above, sometimes naked on 

 one side ; nape and breast naked ; caducous ventral shields large and few 

 in number. Fins all comparatively low and small; pectoral a little 

 shorter than head, barely reaching tips of ventrals ; anal nearly as large 

 as second dorsal, its second spine a little slenderer and longer than first ; 

 caudal lunate. Light straw color, the marking all very dark, verging on 

 jet black ; back with dark cross blotches and irregular wavy longitudinal 

 markings above lateral line, much as in H. aspro ; sides with six large 

 conspicuous square black blotches, about as broad as the interspaces and 

 alternating with fainter bars of black, these sometimes coalescing in a 

 dark lateral bar ; a faint dusky streak along lateral line ; markings some- 

 times bright (peltatus), or obscure and diffuse (crassus); top of head 

 black ; a black bar below eye ; snout and opercle mostly black ; nape 

 with a pale spot surrounding a dark one ; a dark band in axil and 6 to 8 

 round spots on back ; first dorsal with a submedian black band and some 

 black spots toward tip ; second dorsal and caudal obscurely barred ; 

 ventrals and pectorals dusky. Southeastern Pennsylvania southward to 

 South Carolina in coastwise streams ; locally common ; not found west 

 of the Alleghanies. Close to Hadropterus aspro, but with the scales 

 always larger, (peltatus, shielded.) 



Etheostoma peltatum (Stauffer MS.), COPE, Proc. Ac. Nat. Sci. Phila., 1864, 233, Conestoga 

 Creek, near Lancaster, Pennsylvania; (Coll. Stauffer); VAILLANT. Recherches, 61, 

 1873, with plates; JORDAN, Bull. U. S. Fish Comm., vm, 1888 (1890), 113. 



Hadropterus maculatus, GIRARD, Proc. Ac. Nat. Sci. Phila., 1859, 100, (name preoccupied), tribu- 

 tary of Potomac River, Ann Arundel County, Maryland. 



Etheostoma nevisense, COPE, Proc. Amer. Philos. Soc. Phila., 1870, 261, Neuse River at the 

 falls, 8 miles east of Raleigh, North Carolina. (Coll. Cope.) 



Alvordius crassus, JORDAN & BRAYTON, Bull, xn, U. S. Nat. Mus., 12, 1878, Saluda, Ennoree, 

 and Reedy rivers, near Greenville, South Carolina. (Coll. Jordan & Brayton.) 



Alvordius nevisensis, crassus, and variatus, JORDAN & GILBERT, Synopsis, 502 and 503, 1883. 



Percina pellala, Boulenger, Cat., i, 60. 



* This Alvordius maeulatus is more likely to be Hadropterus guntheri than H. aspro, as Girard 

 describes it as having the head scaleless. Perhaps both are varities of one species, to which it 

 may be necessary to add peltatus and ouachilse also, and possibly even aspro. 



