Collecting site
White Oak River Estuary, Swansboro, North Carolina, USA
latitude: 34.690498     34°41'25.79"N
longitude: -77.106499     77°6'23.4"W
[Precision of location: gauged from chart or map] 
[Site Named Here by name of island, bay, strait, lake, river, or stream, etc., named in source publication] 
Collected here:
| Isodiametra pulchra (Smith & Bush, 1991) | 1991 or earlier | mid tide level | muddy sand | Holotype (USNM 119863); paratypes (USNM 119864-119866 and SMNHI 3957, 3958).   Top 2cm of sediment  removed for collecting specimens. | 
| Macrostomum hystricinum marinum Rieger, 1977 | Oct 1975 |  |  | subspecies appears to feed exclusively on diatoms.  Onslow Bay area: White Oak River sand flat. |