Polyschides portoricensis (Henderson, 1920)

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 : 31-32

Polyschides portoricensis (Henderson, 1920)

Figs. 62–63

+ Cadulus (Platyschides) portoricensis Henderson 1920: 115 , pl. 18, fig. 6; Warmke and Abbott 1961: 221; Scarabino 1985: 202, pl. 73, fig. 1035.

Cadulus (Polyschides) quadridentatus (non Dall 1889): Penna­Neme 1974: 115. + Polyschides portoricensis: Díaz and Puyana 1994: 258 , pl. 71, fig. 1049; Scarabino 1994: 310, pl. 107, fig. 1523; Steiner and Kabat, 2001: 448; 2004: 632; Caetano and Absalão 2005: figs. 9–13.

Type material

Holotype USNM 314712.

Type locality

Mayaguez Harbor, Porto Rico, USBF sta 6062, 47 m (by original designation).

Diagnosis

Shell small (to 8 mm), translucid, gently curved, notorious swelling atanterior third of shell. Apex circular, with four lobes. Denticle­like present in the inner side of apical ventral lobe. Oral aperture oblique, section circular.

Material examined

Holotype of Polyschides portoricensis ; IBUFRJ 10576, sta C76, 3 dd; IBUFRJ 14189, sta VV16, 1 dd.

Distribution

Caribbean Sea: Porto Rico (Henderson 1920; Warmke & Abbott 1961); Colombia (Díaz & Puyana 1994); Brazil: off Amapá (Scarabino 1985, 1994), Bahia and Rio de Janeiro (Caetano & Absalão 2005). Empty shells 40 to 86 m.

Remarks

Steiner and Kabat (2004) treated this taxon under the same combination presented here with the statement/label of "new combination" but this generic allocation was previously used by Díaz and Puyana (1994) and Scarabino (1994).

Figures

FIGURES 57 – 73. Genus Episiphon, Entalina, Polyschides and Cadulus. (57) Episiphon didymum, IBUFRJ 14310, 7 mm; (58 – 59) Episiphon sowerbyi, IBUFRJ 14250, 8 mm; (60 – 61) Entalina platamodes, IBUFRJ 13793, 10 mm; (62 – 63) Polyschides portoricensis, IBUFRJ 10576, 7 mm; (64 – 65) Polyschides tetraschistus, (64) Holotype BMNH 1887.2. 9.66, 7 mm, (65) IBUFRJ 14280, 6 mm; (66 – 69) Cadulus parvus, (66) Holotype USNM 314713, 5 mm, (67 – 69) IBUFRJ 9858, 5 mm; (70 – 71) Cadulus eliezeri n. sp., Holotype IBUFRJ 10810, 3 mm; (72 – 73) Cadulus nerta n. sp., Holotype IBUFRJ 14314, 3 mm. Scale bar = 50 m.