Philobrya wandelensis Lamy, 1906

(Figure 18)

Philobrya wandelensis Lamy, 1906a: 50, 51, fig. 4; Melvill and Standen 1907: 116; Dell 1990: 29, figs. 42, 47–49; Absher and Feijó 1998: 440, fig. 3F; Narchi et al. 2002: 655, 656, figs. 14 and 43; Aldea & Troncoso 2008: 94, 95, 103, fig. 92; Jackson et al. 2015: fig. 2l; Urcola & Zelaya 2021: 25, 26, fig. 2.

Hochstetteria wandelensis . Carcelles 1953: 214, pl. 5, fig. 102.

Adacnarca wandelensis . Nicol 1966: 33, 34, pl. 3, figs. 4, 5; M̧hlenhardt-Siegel 1989: 160, pl. 2, fig. 16 and pl. 5, fig. 16; Hain 1990: 87, pl. 13, fig. 1a, b.

Remarks: Philobrya wandelensis was recently redescribed by Urcola & Zelaya (2021). The species is characterized by its modioliform shell with a long anterior portion of the dorsal margin, a microscopically pitted prodissoconch and a cancellate dissoconch covered with a dark brown periostracum, forming strong radial folds.

Philobrya wandelensis is most similar to P. sanjuani (Fig. 16; see comparison under that species). Other morphologically similar species to P. wandelensis are P. atlantica (Fig. 4), P. brattstromi (Fig. 8), and the small-sized (up to 4.2 mm L) specimens of P. blakeana (Fig. 6). Philobrya wandelensis clearly differs from all these species by having a pitted prodissoconch and shorter resilifer (Appendix 1). In addition, P. wandelensis differs from P. atlantica and P. brattstromi by having shorter periostracal setae and from P. blakeana by having a lower density of setae. Furthermore, P. wandelensis is distributed from Antarctica to the Scotia Arc islands, while P. atlantica, P. brattstromi, and P. blakeana appear around the southern tip of South America.