Compressidens pressum (Pilsbry & Sharp, 1897)

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 : 43

publication ID	11755326
publication LSID	lsid:zoobank.org:pub:DD06702D-A18D-4323-9CAE-D8F315FCCCC7
persistent identifier	https://treatment.plazi.org/id/CC6E8784-FFD0-FF93-FF54-FE18F915D4E1
treatment provided by	Plazi (2016-04-04 11:54:41, last updated 2016-11-27 09:11:43)
scientific name	Compressidens pressum (Pilsbry & Sharp, 1897)
status

Treatment

Figs. 86–89

+ Dentalium compressum (non Orbigny 1850): Watson 1879: 516; 1886: 9, pl. 1, fig. 9; Dall 1881: 38.

+ Dentalium pressum Pilsbry and Sharp 1897: 124 , pl. 22, figs. 50–52.

+ Dentalium (Compressidens) pressum: Henderson 1920: 83 , pl. 14, figs. 3, 6, 8; Maury 1922: 39; E merson 1952: 7; Abbott 1974: 387, fig. 4527.

+ Pulsellum (Compressidens) pressum: Kraeuter 1972: 22 , fig. 1 a–f; Scarabino 1975: 181, pl. 58, fig. 883; 1985: 200, pl. 73, fig. 1026.

+ Pulsellum pressum: Cabral and Mello 1994: 40 , fig. 13.

+ Compressidens pressum: Scarabino 1994: 309 , pl. 107, fig. 1516; Steiner and Kabat 2001: 441; 2004: 633; Gracia et al. 2005: 333, fig. 8.

Type material

Holotype BMNH 1887.2.9.35.

Type locality

Culebra Island, West Indies, Challenger sta 24, 18 º 38 ’ 30 "N, 65 º05’ 30 "W, 714 m (by original designation).

Diagnosis

shell medium size (to 12 mm), moderately curved, strongly dorsoventrally compressed, almost subangular on lateral sides. Faint, low longitudinal riblets, mostly on dorsal side; crossed by close, sharp, irregular transversal scratches. Apex simple with a thick callus, lumem circular.

Material examined

IBUFRJ 9996, sta 25 A, 2 dd; IBUFRJ 10700, sta VV 24, 2 dd; IBUFRJ 10966, sta C 36 r, 5 dd; IBUFRJ 14271, sta R 4 # 1, 1 dd; IBUFRJ 14272, sta 52, 6 dd; IBUFRJ 14273, sta 1 f, 2 dd; IBUFRJ 14274, sta 50, 1 dd; IBUFRJ 14275, sta C 35, 1 dd.

Distribution

USA: Florida (Henderson 1920; Kraeuter 1972); Colombia (Gracia et al. 2005); Brazil: Ceará (Cabral & Mello, 1994), off Recife (Kraeuter 1972; Mello 1981), Bahia to Rio de Janeiro (this study). Shells from 168 to 1431 m (Kraeuter 1972).

Remarks

Compressidens pressum is similar to C. ophiodon (Dall, 1881) , a western Atlantic species known from Florida and Caribbean Sea (Kraeuter 1972), but C. ophiodon is distinguished by the more curved and less compressed shell without the longitudinal sculpture.