Eulima cracentis, Souza & Pimenta & Barros, 2021

Eulima cracentis sp. nov.

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( Figure 7 View FIGURE 7 A–I)

Type material. Holotype MNRJ 35202 View Materials † ( Figure 7 View FIGURE 7 A–C) ; Paratypes: MNRJ 23225 View Materials † [1 dd], from the type locality ; MNRJ 35216 View Materials † [2 dd] ( Figure 7 View FIGURE 7 D–I), off Ceará, REVIZEE Nordeste ( 04°15′02″S 37°12′37″W, 206 m), 10/xi/2001 GoogleMaps ; MNRJ 35265 View Materials † [1 dd], off Alagoas, REVIZEE Nordeste ( 09°20′00″S 34°59′00″W, 452 m), 18/xii/2001 GoogleMaps .

Type locality. Brasil: Off Pernambuco, REVIZEE Nordeste ( 08°42′06″S 34°44′06″W, 465 m), coll. RV Natureza, 25/iii/2000 GoogleMaps .

Etymology. From the Latin cracens, meaning neat, graceful; relative to the appearance of the shell.

Description ( Holotype). Shell conical, apex small and obtuse, reaching 5.9 mm long, 1.6 mm wide. Larval shell with about 2.25 whorls, 380 µm wide, 430 µm in height; smooth, transition to teleoconch marked by an almost indistinct incremental scar. Teleoconch with about 5 whorls, slightly sinuous outline, convexity confined to the lower region of each whorl; suture shallow, slightly impressed, sloping; subsutural zone about 1/4 of the height of the whorl; surface glossy and smooth; incremental scars weak, appearing at irregular intervals, frequent. Last whorl about 60% of the shell length; base elongated with slightly rounded outline. Aperture high, narrow, pear shaped, acute posteriorly and rounded anteriorly; outer lip thin, almost straight, opisthocline, slightly projecting near the suture and slightly retracting in the distal region; inner lip sinuous, sloping and well demarcated. Not umbilicate. Shell vitreous, or whitish, with a brownish spiral band at the suprasutural region of the teleoconch, last whorl with a duplicate spiral band in dorsal view.

Measurements. Holotype MNRJ 35202†, 7.25 whorls, SL= 5.9 mm; BWL= 3.6 mm; AL= 2.4 mm; SW= 1.6 mm; AW= 1.0 mm. Paratype MNRJ 35216†, 8 whorls, SL= 6.8 mm; BWL= 4.2 mm; AL= 2.7 mm; SW= 1.9 mm; AW= 1.3 mm.

Remarks. All types of the present species were destroyed; however, it has consistent shell features that allow the description as a new species, and the figures provided here are sufficient for its recognition.

Eulima cracentis sp. nov. presents brownish spiral bands on the teleoconch ( Figure 7 View FIGURE 7 A–C), which is a common feature in the genus. Eulima cracentis sp. nov. can be distinguished from E. bifasciata , a shallow water species of the western Atlantic, by the presence of a single brownish spiral band on the teleoconch, except on the last whorl ( Figure 7C View FIGURE 7 ), while E. bifasciata shows two brownish spiral bands per whorl (see Lamy & Pointier 2017: plate 88, figure 1a, b). Furthermore, E. cracentis sp. nov. has more convex teleoconch whorls and a more inflated body whorl.

Eulima cracentis sp. nov. can also be distinguished from E. ephamilla ( Figure 5 View FIGURE 5 A–E) and E. psila ( Figure 6 View FIGURE 6 A–M) by the presence of the brownish spiral band at the teleoconch, more convex teleoconch whorls and the relatively higher aperture in relation to the body whorl length (ratio AL/BWL= 0.67, 0.60 and 0.63, respectively). Furthermore, E. cracentis sp. nov. has a smaller number of protoconch whorls (2.25 vs. 3.5) and a wider protoconch ( 380 µm vs. 320 µm) than E. psila .

The shell figured by Lamy & Pointier (2017: plate 88, figure 4a–b) of an unnamed species of Eulima collected in Guadeloupe at 200 m resembles E. cracentis sp. nov., but has a narrower protoconch and teleoconch, and seems to have just a single spiral band on the body whorl.

Geographical distribution. Brazil: Ceará, Pernambuco, Alagoas .

Bathymetric distribution. From 206 m to 465 m.