Waccamaw Drainage Fishes 11 



encountered difficulties in identifying certain individuals, especially 

 juveniles, which often appear to be intermediate between E. oblongus 

 and E. sucetta. Rohde et al. (1979) also experienced similar difficulties 

 with specimens from southeastern North Carolina. Hanley (1976) con- 

 cluded that hybrids between E. oblongus and E. sucetta do occur, and 

 that these hybrids may backcross with both parental stocks. Stations: 

 le, 2a,c, 6, 7, 14, 19,21,28,29c. 



Erimyzon sucetta (Lacepede), lake chubsucker. Very few lake chub- 

 suckers were taken during our survey and none from Lake Waccamaw, 

 although Louder (1962a) reported four specimens from the northeast 

 shore of the lake. Most of our specimens were taken in heavily vege- 

 tated areas of standing or slow-moving water. Stations: 3, 7, 21, 30. 



Minytrema melanops (Rafinesque), spotted sucker. Our specimens 

 came from the main channel of the Waccamaw River and were taken 

 from open, moving waters with little or no cover. Stations: 19, 38. 



Ictaluridae — freshwater catfishes 



Ictalurus catus (Linnaeus), white catfish. The white catfish is wide- 

 spread throughout Lake Waccamaw and the main channel of the Wac- 

 camaw River. Several adults exceeding 400 mm TL were trawled from 

 mid-lake stations. Stations: la,b,c,e,h,i, 7, 8a,b,c, 28, 29a, 38, 44, 47. 



Ictalurus melas (Rafinesque), black bullhead. Louder (1962b) 

 reported the black bullhead from Red Hill Swamp (White Marsh tribu- 

 tary) and Shingletree Swamp (Waccamaw River tributary). We col- 

 lected no specimens and found no museum specimens, and its occur- 

 rence in the Waccamaw drainage is doubtful. Menhinick et al. (1974) 

 suggested that Louder's records probably referred to /. nebulosus. 



Ictalurus natalis (Lesueur), yellow bullhead. No specimens of the 

 yellow bullhead were taken from Lake Waccamaw during our survey, 

 but several were collected from the main channel of the Waccamaw 

 River. Louder (1962a) reported one small specimen from the northeast 

 shore of the lake. Stations: 8a,b,d, 19, 29a,47. 



Ictalurus nebulosus (Lesueur), brown bullhead. The brown bull- 

 head has not previously been reported from Lake Waccamaw, but we 

 collected four specimens there during our survey. E. F. Menhinick (pers. 

 comm.) collected two specimens from Toms Fork Creek, a tributary to 

 Seven Creeks. Stations: lb,h. 



Ictalurus platycephalus (Girard), flat bullhead. We discovered one 

 adult flat bullhead in a gill net set off the southeastern shore of Lake 

 Waccamaw, which represents only the second published report of this 

 species from the lake. Louder (1962a) reported a specimen from along 

 the northeast shore of the lake. The species is also present in the Wac- 

 camaw River below Conway, South Carolina (R. H. Moore, pers. 

 comm.). Station: le. 



