Carenzia inermis Quinn, 1983

Geiger, Daniel L., 2019, The Family Seguenziidae Verrill, 1884 in the Northeast Pacific, including a comment on excessive numbers of taxonomic data portals, Zoosymposia 13, pp. 61-69 : 62

Carenzia inermis Quinn, 1983

( Figure 1C )

Carenzia inermis Quinn, 1983a: 362 , figs 13–16. Holotype LACM 1806 . Cascadia Abyssal Plain , Oregon, 2820 m.

Description. Shell to 7 mm, white, whorls inflated, suture impressed; base convex, basal angulation indistinct; umbilicus narrow, with funiculus arising from columellar wall. Mid-whorl carination of early whorls faint; later whorls nearly smooth, with weak spiral threads; growth lines showing V-shaped sinus below suture and less prominent basal sinus.

Distribution. Off Oregon (44.5˚N, 125.5–128˚W). 2800 m.

Figures

FIGURE 1. A–B. Carenzia golikovi Geiger, 2017. A. 5180 m, Abyssal plain W of Oregon, S of Gulf of Alaska, Alaska (approximately 45° N, 153.8° W) (LACM 3317, holotype), 5.3 mm. B. 5100 m, Aleutian Trench, Alaska [near western end of chain], (52° 12'N, 175° 44'E) (LACM 3318, paratype). C. Carenzia inermis Quinn, 1983. 2820 m, Cascadia Abyssal Plain, off Oregon (LACM 1806, holotype), 6.8 mm. D. Asthelys careyi Geiger, 2017. 5180 m, abyssal plain W of Oregon, S of Gulf of Alaska, Alaska (approximately 45° N, 153.8' W) (LACM 3320, holotype), 7.0 mm. E–F. Oligomeria conoidea Galkin & Golikov, 1985. E. 166 m, S of Attu Island, Aleutian Islands, Alaska (LACM 1997-163.7), 5.9 mm. F. 219 m, NE of Semisopochnoi Island, Aleutian Islands, Alaska (LACM Station 86-330), 4.7 mm.