Philinorbis albus Mattox 1958, comb. nov.

• Main Authors: Valdés, Ángel, Cadien, Donald B., Gosliner, Terrence M.
• Format: Text
• Language: unknown
• Published: Zenodo 2016
• Subjects: Biodiversity; Taxonomy; Animalia; Mollusca; Gastropoda; Cephalaspidea; Philinidae; Philinorbis; Philinorbis albus; Arctic; Arctic Ocean; Baja; Galapagos; Pacific; Catalina; Baxter; Gaviota; Hyperion; Long Point; Beaufort Sea
• Online Access: https://dx.doi.org/10.5281/zenodo.6066653; https://zenodo.org/record/6066653

Philinorbis albus (Mattox, 1958) comb. nov. Figure 4 Philine alba Mattox 1958: 98, pl. 33, figs. 1–3. Type material. Holotype (LACM 2072): About 1.8 miles southeast of Long Point, Santa Catalina Island, California (33º22.9’N, 118º20.7’W), 64 m depth, R/ V Velero IV, 25 June 1954, 55 mm preserved length (Fig. 4 D). Paratypes (LACM 2014): About 1.8 miles southeast of Long Point, Santa Catalina Island, California (33º22.9’N, 118º20.7’W), 64 m depth, R/ V Velero IV, 25 June 1954, 17 specimens, 37–48 mm preserved length. Other material examined. Off Point Pinos, California (36°38’N, 122°02’W), 182 m depth, R/ V Tage, 26 Nov 1963,> 20 specimens, preserved 3.9–4.5 mm long, leg. McLean (LACM 63-52.5); 1shell, 1.6 mm long, leg. McLean (LACM 60-21.30). Off Hopkins Marine Station, Pacific Grove, California (36°37.5’N, 121°54’W), 36 m depth, 1960–64, 1 shell, 1.0 mm long, leg. McLean (LACM 60-23.41). Gaviota, California, 164 m depth, Mar 1967, 1 shell, 28.1 mm long, leg. Brophy (LACM 10592). 1 mile northwest of the west end of Anacapa Island, California (34°01’43”N, 119°27’20”W), 69–78 m depth, 24 Mar 1950, 3 specimens, preserved 2.1–4.5 mm long (LACM 50-17.9). 8 miles west of Hermosa Beach, California, 73 m depth, 1965, 4 shells, 1.5–2.2 mm long (LACM 178899). 6.5 miles due east of Hyperion, California, 137–146 m depth, 2 shells, 3.8 mm long, leg. Baxter (LACM 172458). 3 miles east southeast of Ship Rock, Santa Catalina Island, California (33°26’49”N, 118°26’15”W), 95–118 m depth, 16 Sept 1954, 4 specimens, preserved 3.5–4.5 mm long (LACM 54-76.13). 1.5 miles southeast of Long Point, Santa Catalina Island, California (33°23’48”N, 118°21’16”W), 69–84 m depth, 28 Feb 1953,> 10 specimens, preserved 3.3–3.7 mm long (LACM 53-11.6). 1.2 miles from Long Point, Catalina Island, California (33°23’N, 118°13’W), 68 m depth, R/ V Velero IV 10329, 13 Feb 1965, 6 specimens, preserved 1.8–2.6 mm long (LACM 65-5.11). 1.8 miles southeast of Long Point, Santa Catalina Island, California (33º22.9’N, 118º20.7’W), 64 m depth, R/ V Velero IV, 25 June 1954, 4 shells, 14–28 mm long (LACM 01118). 0.5 miles east of Abalone Point, Santa Catalina Island, (33°20’25”N, 118°18’30”W), 80–84 m depth, 12 June 1941, 7 specimens, 1 shell, preserved 2–4.3 mm long (LACM 41-136.4). 4 miles southeast of the east end of Santa Catalina Island, California (33°16’12”N, 118°14’22”W), 186–204 m depth, 24 July 1952,> 10 specimens, preserved 1.8–3.2 mm long (LACM 52-16.7). 5.5 miles southeast of Santa Catalina Island, California (33°15’22”N, 118°12’37”W), 265–274 m depth, 20 Aug 1940, 1 specimen, preserved 2.2 mm long (LACM 40-146.7). Description. Live animal to 60 mm, creamy white to pale brown, short and wide (Fig. 4 A). Cephalic shield longer than posterior shield (Figs. 4 A, D). Shell to 30 mm long, internal, flat, smooth (Figs. 4 B–C). Inner whorl reduced, lacking a coil, bearing weak shelly projection for muscle attachment. Lip projecting above and left of remnant of shell axis forming a conspicuous wing. Periostracum thin. Radular formula 14–24 x 2.1.0/1.1.2. A row of vestigial rachidian teeth may be present (Fig. 4 E). Inner lateral teeth smooth or with up to seven small denticles, Outer teeth small, hook-shaped, smooth. Gizzard not muscularized, with three small, equally sized, oval gizzard plates (Fig. 4 F–G). Range. In North America from Monterey Bay, California to central Baja California (Fig. 3 A). Price et al . (2011) also reported this species from the Galapagos Islands. Depth range 36–274 m. Remarks. Mattox (1958) and Price et al . (2011) provided full anatomical descriptions of this species. See Mattox (1958) and Price et al. (2011) for a full description. : Published as part of Valdés, Ángel, Cadien, Donald B. & Gosliner, Terrence M., 2016, Philinidae, Laonidae and Philinorbidae (Gastropoda: Cephalaspidea: Philinoidea) from the northeastern Pacific Ocean and the Beaufort Sea (Arctic Ocean), pp. 501-537 in Zootaxa 4147 (5) on pages 507-508, DOI: 10.11646/zootaxa.4147.5.1, http://zenodo.org/record/254939 : {"references": ["Mattox, N. (1958) Studies on the Opisthobranchiata: II. A new tectibranch of the genus Philine. Bulletin of the Southern California Academy of Sciences, 57, 98 - 104.", "Price, R. M., Gosliner, T. M. & Valdes, A. (2011) Systematics and phylogeny of Philine (Gastropoda: Opisthobranchia), with emphasis on the Philine aperta species complex. The Veliger, 51, 1 - 58."]}