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Aliceia aenigmatica Dautzenberg & Fischer, 1897 (Fig. 5) Aliceia aenigmatica Dautzenberg & Fischer, 1897: 182 (pl. 4; figs 15- 18). — Bouchet & Warén 1980: 91 (figs 190, 230). — Figueira & Absalão 2012: 5, 6 (figs 1, 2) (including other citations). TYPE LOCALITY. — Azores Island, Princess Alice Bank. DISTRIBUTION. — E Atlantic: Portugal and Azores (Dautzenberg & Fischer 1896, 1897; Dautzenberg 1927; Bouchet & Warén 1980). W Atlantic: Vitória-Trindade Seamount Chain (present paper) to Rio de Janeiro (Figueria & Absalão 2012). HABITAT. — Mud and sand bottoms, bathypelagic zone; 290-1980 m. MATERIAL EXAMINED. — Brazil • 4 shells; Espírito Santo; VitoriaTrindade Chain; MD55; Bouchet, Leal & Métivier col.; V.1987; sta. DC72; 19°00’S, 37°49’W; 950-1050 m depth; MNHN- IM-2012-25417 • 2 shells; same data; 27. V.1987; MZSP 157438 • 4 shells; sta. DC 75; 18°59’S, 37°50’W; 295 m depth; MNHN- IM-2012-25416 • 1 shell; same data; 27. V.1987; MZSP 157437 (Fig. 5A, B) • 4 shells; sta. CB76; 18°59’S, 37°50’W; 637 m depth; MNHN-IM-2012-25415 • 2 shells; same data; 27. V.1987; MZSP 157435 (Fig. 5C, D) • 4 shells; sta. CB77; 19°41’S, 37°48’W; 790- 940 m depth; 27. V.1987; MNHN-IM-2012-25414 (Fig. 5F) • 2 shells; sta. CB93; 19°36’S, 38°53’W; 640 m depth; MNHN- IM-2012-25413 • 2 shells; same data; MZSP 157436 (Fig. 5E). MORPHOLOGICAL FEATURES Shell (Fig. 5) Fusiform, slender, spire high, about twice as long as wide, with c. 6-7 convex whorls, colour cream to white, translucent. Protoconch (Fig. 5 E-G) in two parts: 1) slightly darker, with granulation near suture, with c. 1.5-2 whorls; transition between protoconch 1 and 2 distinguished only by difference of sculpture; 2) c. 1.5-2 whorls, sculpture numerous spiral and axial ribs, in cancellate pattern near suture, light cream. Teleoconch smooth, without sculpture, except for growth lines. Suture well-marked. Spire angle c. 46°. Outer lip of aperture with projection in shoulder region similar to elongated concave scale, structure periodically detected in previous regions of entire teleoconch, 3-4 per whorl (Fig. 5A, B, D). Aperture elliptical, 3 times as long as wide; c. 1/2 of shell length (Fig. 5A, C, F). Canal short, c. 1/8 of shell length. Anal notch marked by projected scales. Outer lip thin, fragile, smooth, without sculpture or lirae. Inner lip straight, without folds. Umbilicus opened, flanked by carinated area, ending in canal. Measurements (length × width in mm) MNHN-IM-2012-25415, sta. CB 76 (Fig. 5C, D): 3.2 by 1.8; MNHN-IM-2012-25413, sta. CB 93 (Fig. 5F): 2.7 by 1.3; MNHN-IM-2012-25416, sta. DC75 (Fig. 5A, B): 4.2 by 2.1; MNHN-IM-2012-25414, sta. CB 77 (Fig. 5G): 3.6 by 1.5. |
