Calliostoma modestulum (Strebel, 1908)

Rosenfeld, Sebastian, Aldea, Cristian, Mansilla, Andres, Marambio, Johanna & Ojeda, Jaime, 2015, Richness, systematics, and distribution of molluscs associated with the macroalga Gigartina skottsbergii in the Strait of Magellan, Chile: A biogeographic affinity study, ZooKeys 519, pp. 49-100 : 62-63

Calliostoma modestulum (Strebel, 1908) Fig. 5B

Material examined.

2 spm (13 × 11 - 15 × 13 mm).

Synonymy.

Calliostoma modestulum (Strebel, 1908): 70, pl. I, figs. 13a-b; Melvill and Standen 1912: 347. Carcelles and Williamson 1951: 263, Castellanos and Landoni 1989: 8, pl. I, fig. 8.

Calliostoma modestula , Castellanos and Fernández 1976: 141, pl. II, figs. 8-9.

Remarks.

From a morphological point of view, Melvill and Standen (1912) commented that this species presents similarities to Photinula crawshayi (Smith, 1905), although it has more globular whorls. The maximum depth at which it has been recorded is 869 m. However, in this study, a shallower depth was recorded, with specimens found at 10 m in beds of Gigartina skottsbergii .

Distribution.

Magellanic: Strait of Magellan: Punta Santa Ana (this record) and western entrance of the Strait of Magellan ( USNM 2010); Cockburn Channel ( Powell 1951); from Chubut ( Castellanos and Fernández 1976), Malvinas/Falkland Islands ( Strebel 1908, Powell 1951, Castellanos and Fernández 1976), and Burdwood Bank ( Melvill and Standen 1912).