Placiphorella velata Dall, 1879

Sellanes, Enrico Schwabe Javier, 2010, Revision of Chilean bathyal chitons (Mollusca: Polyplacophora) associated with cold-seeps, including description of a new species of Leptochiton (Leptochitonidae), Organisms Diversity & Evolution (New York, N. Y.) 10 (1), pp. 31-55 : 47

Type species Placiphorella velata Dall, 1879 , by original designation.

Distribution Worldwide, except for polar regions; Pleistocene– Recent.

Placiphorella atlantica (Verrill & S. I. Smith in Verrill, 1882)

( Fig. 14K, L )

Placophora (Euplacophora) atlantica Verrill & S. I. Smith in Verrill, 1882 — Verrill (1882: 365, footnote).

Name-bearing type Holotype ( USNM 106921 ), examined from digital images provided by Yolanda Villacampa ( USNM); also illustrated in Clark (1994).

Figures

Fig. 14 Ischnochitonid, chitonid and mopaliid deep- water Polyplacophora from Chile. (A–F) Tripoplax cowani, adult, ZSM Mol 20080792 (A, B), and juvenile, ZSM Mol 20080793 (C–F): (A) valves i–v; (B) valves vi–viii; (C, D) dorsal views of anterior and posterior portions, respectively, of complete specimen; (E) left lateral view of complete speci- men; (F) left lateral view of posterior portion, showing post- mucronal slope of tail valve. (G) Tonicia disjuncta, ZSM Mol 20061008; dorsal view of com- plete specimen. (H) Plaxiphora aurata, ZSM Moll 20040961; complete specimen in situ (Chile, Punta Huinay, 42º22.483´S 072º25.693´W, 0– 30.5 m), body length c. 24 mm. (I, J) Placiphorella sp., ZSM Mol 20041044; dorsal views: (I) complete specimen; (J) isolated tail valve. (K, L) Placophora (Euplacophora) atlantica, holo- type; dorsal views: (K) complete specimen; (L) isolated tail valve. Scale bars: A, B, I, K=10 mm; C–E=5 mm; F, L, J=2 mm; G=20 mm. (K, L) courtesy of Y. Villacampa