Anomacme, Strebel, 1905

Luca, Javier Di & Zelaya, Diego G., 2019, Gastropods from the Burdwood Bank (southwestern Atlantic): an overview of species diversity, Zootaxa 4544 (1), pp. 41-78 : 54

“ Anomacme ” multituberculata Castellanos, Rolán & Bartolotta, 1987

Fig. 3H

Anomacme multituberculatus Castellanos et al., 1987: 98 , pl. 1, fig. 8, pl. 2, fig. 5; Signorelli et al., 2015: 53, figs. 1E, F (holotype)

Meteuthria multituberculata multituberculata — Dell, 1990: 173, fig. 289

“ Anomacme ” multituberculata — Pastorino, 2016: 317, figs. 10F–J (protoconch and radula)

Examined material. 2 an. and 12 sh. (MACN-In 40682).

Description. Shell height to 3.6 mm (up to 4.5 mm according to Dell 1990); fusiform, solid. Protoconch large, tilted, of 1.5 elongated, smooth whorls, with the apex partially sunken. Teleoconch of up to 3 whorls, slightly convex in outline, with slightly concave shoulder; last whorl comprising about 60% of total shell height. Suture impressed. Surface white; sculptured with 12 to 16 strong axial ribs and 3 to 5 spiral cords per whorl, which produce large beads at their intersections; base with 5 to 7 additional cords. Axial sculpture vanishing towards the shoulder and the base. Aperture ovate, interior white; outer lip with a small posterior (“anal”) canal; columellar callus moderately thick; siphonal canal moderately long, somewhat oblique, wide. Operculum ovate, nucleus subterminal; pale brown, translucent.

Figures

FIGURE 3. A. Eumetula cf. dilecta Thiele, 1912, MACN-In 40680, scale bar = 1 mm. B. Newtoniellidae sp. 1, MACN-In 40678, scale bar = 1 mm. C. Newtoniellidae sp. 2, MACN-In 40679, scale bar = 1 mm. D. Trochita pileolus (d´Orbigny, 1841), MACN-In 40669, scale bar = 2 mm. E. Eatoniella denticula Ponder & Worsfold, 1994, MACN-In 40670, scale bar = 1 mm. F. Tectonatica impervia (Philippi, 1845), MACN-In 40671, scale bar = 2 mm. G. Onoba fuegoensis (Strebel, 1908), MACN-In 40672, scale bar = 1 mm. H. “Anomacme” multituberculata Castellanos, Rolán & Bartolotta, 1987, MACN-In 40682, scale bar = 1 mm. I. Antistreptus magellanicus Dall, 1902, MACN-In 40681, scale bar = 1 mm. J. Microdeuthria michaelseni (Strebel, 1905), MACN-In 40684, scale bar = 2 mm. K. Pareuthria fuscata (Bruguière, 1789), MACN-In 40683, scale bar = 5 mm.