10 John E. Cooper and Ray E. Ashton, Jr. 



been found west of the Fall Line Zone in the Neuse drainage. Fallicam- 

 barus (C.) uhleri and Procambarus (O.) medialis are Coastal Plain spe- 

 cies, but uhleri has been found along the eastern edge of the Fall Line 

 Zone in Wake and Franklin counties. Although the type-locality of 

 medialis is a roadside ditch on U.S. 258, 0.6 miles (1 km) south of 

 Scotland Neck, Halifax County, the type series and one other lot from 

 near Scotland Neck are the only collections we know of from the Tar 

 river basin; all our collections of this species are from the Neuse River 

 basin. Procambarus (O.) a. acutus is primarily a Coastal Plain species in 

 both systems, but has been found as far west in the Piedmont as the 

 Eno River and its tributaries in Orange County. One other species, Pro- 

 cambarus {Ortmannicus) plumimanus Hobbs and Walton, ostensibly 

 occurs in the lower Neuse River basin. Its type-locality is in the drainage 

 of Slocum Creek, Craven County, which empties directly into the Neuse 

 River Estuary. Nevertheless, none of our Neuse collections contained 

 plumimanus, but we have found it relatively common in the White Oak 

 River hydrologic unit. 



Other Neuse and Tar crustaceans are now under study, and at least 

 one species of isopod, preyed upon by N. lewisi, may be an undescribed 

 endemic. 



Miscellany 



Centrarchid gamefishes are periodically stocked in the Neuse and 

 Tar rivers. Information on stocking, physicochemical characteristics, 

 fish faunas, general macroinvertebrates, and elevation profiles of these 

 rivers was provided by Bay less and Smith (1962) and Smith and Bayless 

 (1964). Additional physicochemical data, major sources of effluent dis- 

 charge, biological and chemical pollutants, general macroinvertebrates, 

 and phytoplankton of the Neuse River and its tributaries, collected at 23 

 stations from the Flat and Eno rivers to the mouth of Broad Creek in 

 the Neuse River Estuary below New Bern, were reported by the Div- 

 ision of Environmental Management, N.C. Department of Natural 

 Resources and Community Development (DNRCD 1980). 



ACKNOWLEDGMENTS.— We are grateful to the N.C. Wildlife 

 Resources Commission and the Office of Endangered Species, U.S. Fish 

 and Wildlife Service, for their support of this study. We thank them, 

 too, for providing funds that helped defray the cost of this issue of 

 Brimleyana. Stuart Critcher, Wildlife Resources Commission, was espe- 

 cially helpful. Other funding was provided by the N.C. State Museum of 

 Natural History, a division of the N.C. Department of Agriculture. 

 Patricia S. Ashton developed the basic computer methods used in cer- 

 tain aspects of the study. 



