North Carolina Crayfishes 109 



passes most of the coastal plain lying in the Cape Fear River basin 

 (excluding the Northern [Northeast] Cape Fear) southward through 

 the Little Pee Dee River basin." The following records and discussions 

 support this statement, slightly expand and clarify the known ranges 

 of these species, add some information on their natural history, and 

 help explain a distributional anomaly for P. plumimanus. 



Procambarus medialis 



As mentioned by Cooper and Ashton (1985:10), although the 

 type locality of P. medialis is in the Tar-Pamlico basin in Halifax 

 County (Hobbs 1975:13), this and one other site near it in the drainage 

 of Deep Creek are the only places within this basin where the species 

 currently is known to occur. All other collection sites are within the 

 Neuse River basin. Eleven specimens were captured in wire minnow 

 traps at three localities in the Neuse basin during the N. lewisi study 

 (Braswell and Ashton 1985), and one of them was in the mainstem 

 Neuse River in Lenoir County. Identical traps were employed at over 

 180 stations in the Tar-Pamlico basin, from its headwaters in Person 

 County to central and southern Beaufort County, but yielded no 

 additional P. medialis. One of these stations was in Beech Swamp, 

 less than 5 air mi (8 air km) west of Deep Creek, and another was 

 in the Tar River near its confluence with Deep Creek in Edgecombe 

 County. There are no obvious ecological, edaphic, or physiographic 

 reasons, however, for this apparent severe restriction of the known 

 range of P. medialis in the Tar-Pamlico basin. During the N. lewisi 

 survey, little collecting was done in roadside ditches or isolated lentic 

 waters, and no digging of burrows was attempted. More thorough 

 sampling of these possibly preferred habitats might reveal a wider 

 distribution pattern for P. medialis in this river basin, although it 

 also inhabits larger, flowing waters in the Neuse basin. 



The following additional localities are in the Neuse River basin: 

 Johnston Co.— {!) Black Crk at NC 50, 5.5 air mi (8.8 air km) NNE 

 Benson; 1 9 (NCSM C-144), 27 Jan 1979, trap, K. Everett; 1 9 

 (NCSM C-230), 30 Jan 1979, trap, KE; 1 9 (NCSM C-140), 10 Feb 

 1979, trap, KE; (2) Hannah Crk at US 701, 10 air mi (16 air km) 

 E Benson; 4 9 (NCSM C-1079), 22 Apr 1979, trap, P. S. Freed, 1 6 

 II, 1 9, 1 j 9 (NCSM C-1097), 23 Apr 1979, trap, PSF; (3) dry 

 roadside ditch, Truck Lane and East Rose St, Smithfield; 1 c? I, 1 

 6 II, 1 9 (NCSM C-2270), 17 Apr 1985, W. M. Palmer, ALB. 

 Lenoir Co.— (4) Neuse R at NC 55, 1.1 rd mi (1.8 rd km) E jet SR 

 1809, 5.2 air mi (8.3 air km) NE Kinston; 1 6 II (NCSM C-231), 29 

 Jan 1979, trap, PSF. 



