FISHES OF PENNSYLVANIA. 123 

front of the eye. The lower jawis slightly the longer. Thecheeks are scaleless and 
the opercle is described as without scales, but the example before me has several 
large scales on the upper edge of the subopercle. The opercular spine is stout and 
short; the exposed tip one-fourth as long as the eye. The origin of the spinous dorsal is 
over the eleventh scale of the lateral line; the base of the fin is nearly as long as 
the head ; the spines are all slender, the first as long as the snout, the fourth and 
longest one-half length of head without the snout, the last two-thirds as long as the 
eye. The interspace between the spinous and soft dorsals is shorter than the eye. 
The base of the soft dorsal is nearly two-thirds as long asthe head ; the fin is highest 
in front, the third ray being as long as the eye and snout combined, while the last 
ray is as long as the snout. The ventral origin is under the seventh scale of the lat- 
eral line ; the fin isas long as the soft dorsal base. The anal origin is under the 
forty-sixth scale of the lateral line ; the anal base is one-half as long as the head; the 
two spines are about equal in length, the first as long as the snout; the second and 
longest ray is as long as the eye and snout combined; the last ray is as long as the 
snout. The caudal is truncate, the middle rays as long as the snout and eye. The 
pectoral reaches to the twenty-fifth scale of the lateral line. The breastand the edge 
of the abdomen are scaleless, the belly shields having dropped off. The lateral line 
isi very slightly deecurved. Di XV, 14;-7A. Il, 11; VW... 5; P5135 scales; 10-76-12: 
Gill-rakers very short, stout, about nine developed on the first arch. In spirits the 
back is brown, the lower parts pale. A series of large dusky blotches forming an 
interrupted median band on the sides, A Gark brown streak extending downward 
and forward from the eye. A1l the fins more or less barred. In life the dark spots 
on the sides are more conspicuous and there is an undulating whitish band from the 
head to the caudal fin. The specimen described, No. 1164, United States National 
Museum, from French Creek, Pa., is four inches long. 
The long-headed darter inhabits the headwaters of the Ohio river in 
Pennsylvania. It grows to a length of three inches. 
This darter was originally described from the Ohio valley in western 
Pennsylvania. 
138. Etheostoma peltatum Sraurrer. 
The Shielded Darter. 
Body moderately stout; head one-fourth of total length; depth of body about one- 
fifth; muzzle blunt; scales wanting on cheeks, nape and breast; upper part of the 
gill-covers scaly; lower part naked; seven rows of scales above lateral line, nine 
below and fifty-three in the lateral line. 
D. XIII or XIV, 12-138; A. II, 8or9; color olive. There are short bars across the 
bac and the sides have broad, brownish shades. On the neck and opercle there is 
a dark blotch; bars present on the snout and the space below the eye. The fins are 
barred and the spinous dorsal has a black band. 
The shielded darter (from the enlarged shield-like scales on the belly) 
was originally found by Jacob Stauffer in Conestoga creek, Lancaster 
county. Its range is now known to extend to South Carolina, east of 
the Alleghenies. 
The species grows to a length of four inches. 
139. Etheostoma aspro Corr anp Jorpay. 
The Black-sided Darter 
The head is long and pointed, one-fourth of total length; the depth about one- 
fifth; the maxilla extends to past front of eye; the lower jaw is included; the body 
is spindle-shaped, compressed behind, moderately elongate; eye 4 in head, about 
