Figure 23
Thyone pseudofusus.— Deichmann, 1930: 168, pl. 14 figs. 6–9; Hendler et al, 1995: 277, figs 154, 182 K - M.
Material examined. USNM E 29371, off S.C., 32 ° 29 ’06”N, 78 ° 49 ’06”W, R/V Oregon, Sta OS06, Aug. 6, 1981, 54m. USNM E 29373, off S.C., 32 ° 49 ’ 30 ”N, 78 ° 39 ’ 48 ”W, R/V Bagby, Sta MS06, March 15, 1981, 34m, 2. USNM E 29375, off S.C., 32 ° 29 ’00”N, 78 ° 49 ’ 12 ”W, R/V Oregon, Sta OS06, Aug. 6, 1981, 54m. USNM E 29380, off S.C., 32 ° 29 ’ 36 ”N, 79 ° 42 ’ 30 ”W, R/V Bagby, Sta IS01, Oct. 23, 1981, 17m. USNM E 29381, off S.C., 32 ° 49 ’ 18 ”N, 78 ° 39 ’ 42 ”W, R/V Bagby, Sta MS06, Oct. 28, 1981, 33m. USNM E 29393, off Georgia., 31 ° 41 ’06”N, 80 ° 20 ’ 48 ”W, R/V Bagby, Sta MS02, May 14, 1981, 27m. USNM E 29408, off S.C., 32 ° 49 ’ 18 ”N, 78 ° 39 ’ 42 ”W, R/V Bagby, Sta MS06, Oct. 28, 1981, 33m, 4. USNM E 29411, off Georgia, 31 ° 23 ’ 36 ”N, 80 ° 53 ’ 12 ”W, R/V Bagby, Sta IS02, May 13, 1981, 17m. USNM E 29413, off Georgia, 31 ° 23 ’ 36 ”N, 80 ° 53 ’ 12 ”W, R/V Bagby, Sta IS02, Aug. 4, 1981, 18m. USNM E 29441, off Georgia., 31 ° 41 ’ 06”N, 80 ° 20 ’ 48 ”W, R/V Bagby, Sta MS02, March 10, 1981, 28m. USNM E 29442, off S.C., 32 ° 29 ’06”N, 78 ° 49 ’ 18 ”W, R/V Oregon, Sta OS06, May 4, 1981, 48m, 2. USNM E 29443, off N.C., 34 ° 24 ’ 12 ”N, 76 ° 35 ’ 48 ”W, R/V Onslow Bay, Sta IS05, July 28, 1981, 18m. USNM E 29453, off Georgia, 31 ° 23 ’ 36 ”N, 80 ° 53 ’ 12 ”W, R/V Bagby, Sta IS02, May 13, 1981, 17m, 2. USNM E 30284, off Georgia, 31 ° 23 ’ 36 ”N, 80 ° 53 ’ 12 ”W, R/V Bagby, Sta IS02, Aug. 4, 1981, 18m. USNM E 30516, off N.C., 34 ° 24 ’06”N, 76 ° 35 ’ 42 ”W, R/V Onslow Bay, Sta IS05, April 27, 1981, 18m. USNM E 32245, off N.C., 33 ° 32 ’ 36 ”N, 77 ° 25 ’ 24 ”W, R/V Eastward, Sta MS04, Sept. 4, 1980, 33m. DML 1481, 34 º07.5'N, 76 º14.5'W, R/V Eastward Sta 4943, July 1, 1966, 75 m. DML 4348, 33 º31.7'N, 77 º24.5'W, R/V Dan Moore Sta BLM 65818127, May 18, 1981, 29 m. DML 4367, 33 º33.5'N, 77 º 25 'W, R/V Dan Moore Sta BLM 65818125, May 18, 1981, 34 m.
Diagnosis. Body tapering, up to 20 mm long, with mouth and anus directed dorsally. Color whitish. Feet in double rows along radii, scattered on interradii, especially ventrally. Tentacles 10, ventral pair smaller. Body wall with thick tables (105–140 μm) with 4 perforations and spire terminating in several teeth.
Distribution. NC to FL, Gulf of Mexico, West Indies, Tobago, Panama, Colombia, Brazil, Yucatán.
Habitat. Burrows in calcium carbonate particles covered in dense layer of white calcareous silt, beneath the rubble at the base of limestone ledges on the east coast of Florida. 6– 46 m.
Remarks. Hendler et al. (1995) remark upon the apparent deposit-feeding propensities of this species.