144 
BULLETIN OF THE UNITED STATES FISH COMMISSION 
4. Catostomus nigricans (Le Sueur). S., M., G., B., W., D. 
Common in swift waters. 
5. Moxostoma duquesnei (Le Sueur). M., G. , N., B., W. 
CommoB in the larger streams. The specimens agree with the common northern 
red-horse, except that the free edge of the dorsal is decidedly concave. D. usually 
13 ; lower fins red, the caudal pale. 
6. Lagochila lacera (Jordan & Brayton). N. 
A few specimens taken at Saltville. Scales 45. In life steel-blue; lower fins 
creamy; snout black; dorsal and caudal creamy, dusky edged. 
7. Campostoma anomalum (Eafinesque). S., M. G., N., B., W., D. “Mammy.” 
Everywhere common, ascending small streams. 
8. Notropis spectrunculus (Cope). M., S., N., G. 
A small fish characteristic of the mountain streams. Common at Marion and 
Holstein Mills ; rare at Saltville and Glade Spring. Very pale olive; fins in life pale, 
dull red or salmon color, no red on snout; black caudal spot always distinct. 
9. Notropis microstomus (Eafinesque). N., D. 
Scarce. Back rather more elevated than in the specimens called stramineus, some 
dark specks along lateral line; 13 scales before dorsal. 
10. Notropis megalops (Eafinesque). S., G., N., B., W. 
Common, but confined to the larger streams, not ascending the colder waters. 
But one taken at Holstein Mills and none at Marion. The specimens belong to Cope’s 
\ax. frontalis (Agassiz), having 17 scales before the dorsal. 
11. Notropis lacertosus (Cope). S., N. 
Two young specimens only taken. This seems to be a rare species. It has been 
known hitherto only from a brief description of a specimen taken by Professor Cope at 
Saltville. 
Color green above ; sides silvery; a dark speck on front of opercle. Very close to 
N. megalops, the young of which it resembles in form and squamation, almost the only 
tangible difference being that the mouth is somewhat larger in N. lacertosus and the 
lower jaw projects. Head 4^ in length; depth 4^ ; eye a little longer than snout, 3. 
Maxillary reaching to just past front of eye, 3 in head ; mouth oblique, the lower jaw 
prominent. Lateral line decurved. Scales 5-38-3. 17 before dorsal. Fins all low. 
Dorsal slightly behind ventrals. A. 8. (Specimen 2f inches long.) 
12. Notropis leuciodus (Cope). S., M., G., N., B., W., D. 
Very common, but not ascending the spring branches so far as N. telescopus. 
Closely related to A. telescopus, but distinguished by the short anal, rather smaller 
eye, usually paler coloration and very distinct caudal spot. Snout a little more obtuse 
than in N. telescopus. Anal rather short and high with 8 rays. Eyes 3 in head; mouth 
rather smaller and less oblique than in N. telescopus, the maxillary 3J in head, the 
lower jaw slightly included. Insertion of dorsal midway between tip of snout and 
base of caudal, a little behind base of ventrals ; 13 scales before dorsal. Depth 5 in 
length. These two species make up the bulk of the small minnows of the Holston 
region. 
