Thyone pseudofusus Deichmann 1930

Thyone pseudofusus Deichmann, 1930

Figure 23

Thyone pseudofusus.— Deichmann, 1930: 168, pl. 14 figs. 6–9; Hendler et al, 1995: 277, figs 154, 182K - M.

Material examined. USNM E29371, off S.C., 32°29’06”N, 78°49’06”W, R/V Oregon, Sta OS06, Aug. 6, 1981, 54m. USNM E29373, off S.C., 32°49’30”N, 78°39’48”W, R/V Bagby, Sta MS06, March 15, 1981, 34m, 2. USNM E29375, off S.C., 32°29’00”N, 78°49’12”W, R/V Oregon, Sta OS06, Aug. 6, 1981, 54m. USNM E29380, off S.C., 32°29’36”N, 79°42’30”W, R/V Bagby, Sta IS01, Oct. 23, 1981, 17m. USNM E29381, off S.C., 32°49’18”N, 78°39’42”W, R/V Bagby, Sta MS06, Oct. 28, 1981, 33m. USNM E29393, off Georgia., 31°41’06”N, 80°20’48”W, R/V Bagby, Sta MS02, May 14, 1981, 27m. USNM E29408, off S.C., 32°49’18”N, 78°39’42”W, R/V Bagby, Sta MS06, Oct. 28, 1981, 33m, 4. USNM E29411, off Georgia, 31°23’36”N, 80°53’ 12”W, R/V Bagby, Sta IS02, May 13, 1981, 17m. USNM E29413, off Georgia, 31°23’36”N, 80°53’12”W, R/V Bagby, Sta IS02, Aug. 4, 1981, 18m. USNM E29441, off Georgia., 31°41’ 06”N, 80°20’48”W, R/V Bagby, Sta MS02, March 10, 1981, 28m. USNM E29442, off S.C., 32°29’06”N, 78°49’18”W, R/V Oregon, Sta OS06, May 4, 1981, 48m, 2. USNM E29443, off N.C., 34°24’12”N, 76°35’48”W, R/V Onslow Bay, Sta IS05, July 28, 1981, 18m. USNM E29453, off Georgia, 31°23’36”N, 80°53’12”W, R/V Bagby, Sta IS02, May 13, 1981, 17m, 2. USNM E30284, off Georgia, 31°23’36”N, 80°53’12”W, R/V Bagby, Sta IS02, Aug. 4, 1981, 18m. USNM E30516, off N.C., 34°24’06”N, 76°35’42”W, R/V Onslow Bay, Sta IS05, April 27, 1981, 18m. USNM E32245, 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, 76º14.5'W, R/V Eastward Sta 4943, July 1, 1966, 75 m. DML 4348, 33 º31.7'N, 77º24.5'W, R/V Dan Moore Sta BLM65818127, May 18, 1981, 29 m. DML 4367, 33 º33.5'N, 77º25'W, R/V Dan Moore Sta BLM65818125, 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.