Antalis cerata (Dall, 1881) Figs. 20–22 + Dentalium ceratum Dall 1881: 38; 1889: 424, pl. 26, fig. 5, pl. 27, fig. 2; Pilsbry & Sharp 1897: 57, pl. 5, figs. 4, 5. + Dentalium (Antalis) ceratum: Henderson 1920: 49, pl. 7, figs. 4–7; Maury 1922: 35; Turner 1955: 311; Abbott 1974: 385; Penna­Neme 1974: 107. + Dentalium (Antalis) ceratum ceratum: Henderson 1920: 50, pl. 7, fig. 2. + Dentalium (Antalis) ceratum flavum Henderson 1920: 51, pl. 7, fig. 1. + Dentalium (Antalis) ceratum tenax: Henderson 1920: 52, pl. 7, fig. 3. + Dentalium (Antalis) ceratum varians Scarabino 1973: 196, pl. 1, fig. 4, 4a–d. + Dentalium (Dentale) ceratum: Emerson 1952: 3; Warmke and Abbott 1961: 224. + Antalis ceratum: Scarabino 1979: 110, pl. 1, fig. 2; Scarabino 1985: 198, pl. 2, fig. 1010; 1994: 306, pl. 106, fig. 1498; Redfern 2001: 190, pl. 76, figs. 779. + Antalis cerata: Steiner and Kabat 2001: 440; 2004: 575. Type material Lectotype USNM 95326 (designated by Henderson, 1920: 50); Paralectotypes USNM 887458, 3 dd, MCZ 7697, 1 dd, MCZ 7706, 5 dd. Diagnosis Shell to 29 mm long, slender, regularly tapering, slightly curved, light yellow in posterior half. Nine to twelve round, smooth primary ribs. Straight intercostals spaces, striae forming reticulum. Secondary ribs present. Anterior third smooth. Apex polygonal, V­shaped notch present. Oral aperture circular. Material examined Lectotype and Paralectotype MCZ 7697 of Antalis cerata; Paratype of D. ceratum varians MZUSP 25488 (ex MHNM 2703); IBUFRJ 14259, sta C18, 1 dd; IBUFRJ 10993, sta C38, 1 dd; IBUFRJ 14253, sta A3, 28 dd; IBUFRJ 14276, sta C13, 1 dd; IBUFRJ 14277, sta R4#1, 1 dd; IBUFRJ 14278, sta VV24, 2 dd; IBUFRJ 14279, sta 504, 2 dd Distribution USA: Florida, of mouth of Mississippi river, Key West, Sand Key, Triumph reef, Sambo reef; Cuba: off Habana, Martinique and Barbados; Yucatan bank; Puerto Rico: Mayaguez; Barbados (Dall & Simpson 1902; Henderson 1920; Sander & Lalli 1982); Brazil: Amapá to Rio Grande do Sul (Penna 1972; Penna­Neme 1974; Fischer­Piette 1973; Scarabino 1975, 1985, 1994); Uruguay: off Rio de la Plata (Scarabino 1973). Living 32 to 338 m (Penna­Neme 1974), shells down to 1960 m.

Published as part of Caetano, Carlos Henrique Soares, Scarabino, Victor & Absalão, Ricardo Silva, 2006, Scaphopoda (Mollusca) from the Brazilian continental shelf and upper slope (13 º to 21 ºS) with descriptions of two new species of the genus Cadulus Philippi, 1844, pp. 1-47 in Zootaxa 1267 on pages 13-15, DOI: 10.5281/zenodo.173183