Unionid Mollusks 
69 
Table 1. Comparison of the native unionid faunas of the Tar, Neuse, and Cape 
Fear river systems. 
Tar 1 
Neuse 2 3 
Cape Fear 
Fusconaia masoni 
+ 
+ 
+ 
Villosa constricta 
+ 
+ 
+ 
V. delumbis 
+ 
+ 
V. vibex 
+ 
Carunculina pulla 
+ 
+ 
+ 
Lampsilis cariosa 
+ 
+ 
+ 
L. ochracea 
+ 
L. radiata radiata 
+ 
+ 
+ 
Anodonta cataracta 
+ 
+ 
A. imbecilis 
+ 
+ 
A. couperiana 
+ 
Strophitus undulatus 
+ 
+ 
+ 
Alasmidonta varicosa 
+ 
A. undulata 
+ 
+ 
+ 
A. heterodon 
+ 
+ 
Lasmigona subviridis 
+ 
+ 
+ 
Elliptio folliculata 
+ 
E. raveneli 
+ 
E. complanata 
+ 
+ 
+ 
E. congaraea 
+ 
E. lanceolata 
+ 
+ 
+ 
E. marsupiobesa 
+ 
E. steinstansana 
+ 
Uniomerus tetralasmus 
+ 3 
+ 
Total species 
14 
14 
21 
1 Clarke (1983) also reported a live specimen of Anodontoides ferussacianus 
(Lea) from the upper reaches of the Tar in Granville County, but Johnson 
(1970) does not record this species from any Atlantic drainage, even as a junior 
synonym. Burch (1975) gives the range as the interior basins of the United 
States and Canada, the Great Lakes, and the St. Lawrence River drainages. 
2 Taken from Johnson (1970). 
3 Based on Johnson (1970), which is in accordance with Burch (1975), who 
reports the range as being from the Altamaha River system of Georgia to the 
Chowan of North Carolina. However Clarke (1983) questioned the concept of 
U. tetralasmus and considered it absent from the Roanoke, Tar, and Neuse 
systems. 
