Dentalium laqueatum Verrill, 1885

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, Zootaxa 1267, pp. 1-47 : 7-9

Dentalium laqueatum Verrill, 1885

Figs. 1–5

+ Dentalium laqueatum Verrill 1885: 431 , pl. 44, fig. 18; Dall 1889: 426, pl. 27, fig. 1; Maury 1922: 34; Abbott 1974: 383, fig. 4491; Scarabino 1994: 306, pl. 105, fig. 1496; Cabral and Mello 1994: 34, fig. 2; Steiner and Kabat 2001: 442; 2004: 608; Gracia et al. 2005: 330, fig. 3. + Dentalium (Dentalium) laqueatum: Henderson 1920: 23 ; Penna­Neme 1974: 106; Scarabino 1985: 197, pl. 71, fig. 1008.

+ Dentalium (Dentalium) laqueatum laqueatum: Henderson 1920: 24 , pl. 1, figs. 6, 7. + Dentalium (Dentalium) laqueatum regulare Henderson 1920: 26 , pl. 1, fig. 8.

Type material

Holotype USNM 44671.

Type locality

Off Cape Hatteras, North Carolina, USA, 124 m (by original designation).

Diagnosis

Shell up to 60 mm long, cream, slightly curved, entire surface reticulated by longitudinal, transversal striae. Nine to twelve rounded primary ribs, secondary ones begin early, all reach oral aperture, giving polygonal section. Intercostal spaces concave. Apex polygonal, short notch at convex side.

Material examined

Holotype of D. laqueatum ; IBUFRJ 8064, sta D14, 4 lv; IBUFRJ 8082, sta VV38, 3 dd; IBUFRJ 14233, sta Y5, 2 dd; IBUFRJ 14234, sta R2#1, 2 lv, 37dd; IBUFRJ 14235, sta R1#1, 1 dd; IBUFRJ 14236, sta 27, 2 dd; IBUFRJ 14237, sta 25, 1 dd; IBUFRJ 14238, sta C27, 2 lv, 13 dd; IBUFRJ 14239, sta C35, 1 dd.

Distribution

USA: North Carolina, Florida; Caribbean Sea: Gulf of Mexico, North of Cuba; Jamaica; Antigua, Barbados and Grenada; north of Yucatan; Campeche bank ( Henderson 1920; Abbott 1974); Colombia ( Gracia et al. 2005); Brazil: Amapá to Santa Catarina ( Penna­Neme 1974; Scarabino 1985, 1994). Living 82 (this study) to 225 m ( Sander & Lalli 1982), shells 77 to 550 m (this study).

Remarks

Verrill (1885: 432) indicated: "st. 2268 off Chesapeake Bay, in 68 fathoms", but the label of the type material reads "off Cape Hatteras USBF, in 68 fms", the locality cited by Steiner and Kabat (2004).

Figures

FIGURES 1 – 19. Genus Dentalium and Paradentalium. (1 – 5) Dentalium laqueatum, (1) IBUFRJ 14233, 40 mm, (2 – 5) IBUFRJ 14238, 27 mm; (6 – 10) Paradentalium gouldii, (6) Paralectotype MCZ 7707, (7 – 10) IBUFRJ 10796, 10 mm; (11 – 15) Paradentalium disparile, (11 – 13) IBUFRJ 7744, 36 mm, (14 – 15) other specimen from the same lot exibiting the apical pipe, 29 mm; (16 – 19) Paradentalium infractum, IBUFRJ 14240, 45 mm. Scale bar = 100 m.