Calliostomatidae, Colloniidae, Margaritidae, and Solariellidae (Gastropoda: Trochoidea) collected by the Marion Dufresne (MD 55) expedition in southeastern Brazil, with description of a new species of Calliostoma Author Cavallari, Daniel C. Author Salvador, Rodrigo B. Author Dornellas, Ana P. S. Author Simone, Luiz R. L. text Zootaxa 2019 2019-05-24 4609 3 401 428 journal article 26678 10.11646/zootaxa.4609.3.1 c80bd1b6-a3cc-4c22-94fd-e231913ac8d5 1175-5326 3227892 F38E6655-0EC4-48E1-A002-CAC599F3556D 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.