CYPRINIDA. 63 
of eye straight to upper half of caudal, passing around the nose; below 
this sharply dusky; the opercles, lower haif of eye, and lips in the dark 
band. 
Teeth 1, 4-4, 1, hooked and sharp-edged. 
Types, No. 9296, United States National Museum, from Georgia. 
Collector, Hugh M. Neisler; exact locality not specified. Numerous 
Specimens in poor condition, showing no trace of tubercles. 
Length 24 inches. 
This small, handsome species is related to P. pyrrhomelas and P. 
xenurus, but needs no special comparison with either. The small size, 
the coloration, and immense development of the dorsal and anal fins 
distinguish it completely. 
45. SEMOTILUS THOREAUIANUS, sp. nov. 
Body short and rather stout, rather abruptly narrowed behind dorsal ; 
depth 33 to 44 in length. Head short and thick, 3? in length, almost 
round in the larger specimen. Mouth large, oblique, the jaws about 
equal. Barbell lateral, better developed than in 8S. corporalis. Eye 
small, 45 to 5 in head, 14 in snout, about 2 in interorbital space, cheeks 
swollen; snout in a small male specimen 3 inches long, with a bilobed 
tubercle on each side. 
Fin-rays :—Dorsal I,8; anal I,7. Dorsal entirely behind ventrals, its 
last ray over the first of anal; caudal peduncle slender; fins all short; 
pectorals not reaching nearly to ventrals, the latter not to vent. 
Seales larger than in S. corporalis, not much crowded forward, 5-48-9 ; 
Jateral line much decurved. 
Coloration of S. corporalis, the black dorsal spot distinct. 
Types, No. 9296, United States National Museum, from “Georgia”. 
Collector, Hugh M. Neisler. Two specimens, the longest 33 inches 
long. 
This species differs from Semotilus corporalis in its largescales, more 
backward dorsal, short head, and small size. The number of scales in 
the lateral line will probably always distinguish it. 
This species is named in honor of the late Henry David Thoreau, of 
Concord, Mass., an excellent ichthyologist, one of the first to say a geed 
word for the study of Cyprinide.* 
*Tam the wiser in respect to all knowledge, and the better qualified for all fortunes, 
-for knowing that there is a minnow in the brook. Methinks I have need even of his 
sympathy and to be his fellow in a degree. * 2 
I would know even the number of their fin-rays, and how many scales compose the 
lateral line-—(Thoreau, Essay on Nat. Hist. Mass. 1842. <Excursions, ed. 1863, p. 56.) 
