Callogaza watsoni Dall, 1881

(Fig. 6 A–F)

Synonymy see Quinn (1979) and Simone & Cunha (2006). Complement:

Callogaza watsoni Dall, 1881: 50; Simone & Cunha, 2006: 22, figs 41–44, 58–60; Rosenberg et al., 2009: 624.

Gaza (Callogaza) watsoni: Quinn, 1979: 25; Rios, 2009: 55.

Type material. Holotype: MCZ 7544.

Type locality. Cuba, off Havana, 24°34’N, 83°16’W, 324 m (Blake Expedition, 1877) .

Previously known distribution. From the Yucatan strait to Northeast Brazil (Simone & Cunha, 2006), live specimens from 66–1170 m, usually deeper than 250 m (Quinn, 1979).

New occurrence. Southeast Brazil, off Espírito Santo, Abrolhos Slope.

Habitat: Coralline and sandy bottoms.

Material examined. Brazil: Espírito Santo: off São Mateus, Abrolhos Slope, 18°59’S, 37°50’W, MD55 sta. DC 75, 295 m, MNHN, 9 sh (27/v/1987); 18°59’S, 37°48’W, MD55 sta. DC73, 607– 620 m, MNHN, 2 sh (27/ v/1987); 19°40’S, 37°48’W, MD55 sta . CB77, 790– 940 m, MNHN, 2 lots (1 + 4 sh) (27/v/1987). Additional non- MD55 material: Cuba: holotype .

Measurements. ~5½ whorls, H= 7.2 mm, D= 9.2 mm (largest juvenile specimen).

Remarks. The present specimens are young individuals with up to 5½ whorls. Adult specimens have around 7 whorls according to Simone & Cunha (2006). Additionally, juveniles lack a well-developed callus and reflected lip. The MD 55 specimens compare well with the holotype in that they present the strongly marked reticulate sculpture on the apical side of the whorls (Fig. 6 B), the dominant well-marked spiral sculpture that produces a slightly keeled shell profile (Fig. 6 A), and a similarly sculptured periumbilical region, with numerous axial furrows (Fig. 6 C). The youngest specimens (~3¾ whorls, protoconch included) have a distinct rounder profile (Fig. 6 E), which is compatible with the earliest whorls of older individuals. Nevertheless, the first spiral cords appear at 3½ whorls (Fig. 6 F), at which point the shell becomes characteristically keeled. The specimens analyzed here are very similar to the individual reported by Simone & Cunha (2006: figs 58–60), which was mentioned by Dall (1889: 342) as a record from Brazil. Dall’s specimen was collected off Fortaleza, Ceará state, R/V Albatross sta. 2756, at 716 m depth. The present records thus represent a range expansion of over 1,800 km further south to Brazilian waters.