Aleutibuccinum, Mclean & Clark, 2023

Mclean, James H. & Clark, Roger N., 2023, Seven new genera and thirty-four new species of buccinoid gastropods (Neogastropoda: Buccinidae) from the Aleutian Islands, Alaska, Zootaxa 5351 (2), pp. 151-201 : 193

Genus Aleutibuccinum n. gen.

Figures 20 A–E urn:lsid:zoobank.org:act:4FFF4DE6-E1F3-4DCF-A324-1814FB1C113F

Type species: Bathybuccinum clarki Kantor & Harasewych, 1998 (n. comb.)

Description: Medium size (height to 7 cm); Profile high, whorls rounded to angulate; spiral sculpture of fine lirae, axial sculpture absent; mature lip slightly flared; operculum sub-triangular with lateral nucleus.

Remarks: Kantor & Harasewych (1998) Originally placed Aleutibuccinum clarki in the genus Bathybuccinum (Golikov & Sirenko, 1988) subgenus Ovulatibuccinum (Golikov & Sirenko, 1988) but it is clearly distinct from both of these groups. The unique operculum sets this genus apart from all other North Pacific Buccininae . At present, the Aleutibuccinum clarki is the only species assigned to this genus.

Figures

FIGURE 20. A–E. Aleutibuccinum clarki (Kantor & Harasewych, 1998); A. Paratype, RNC 3924, S of Attu Island, 169 m, 50.7 mm; B. RNC 3925, S of Attu Island, 169 m, 50.1 mm; C. RNC 4371, E of Segula Island, 336 m, 55.6 mm; D. RNC 3962, Seguam Pass, 235 m, 61.1 mm; E. operculum from RNC 3924 (fig. 20 A); F–H. Castaneobuccinum castaneum Dall, 1877; F. Holotype, USNM 108973, Shumagin Islands, 36 m, 65 mm; G. RNC 4722, Tanaga Island, 90 m, 69 mm; H. Radula, RNC 4722, bar = 200 µm; I, J. Castaneobuccinum fluctuatum Dall, 1919; I. Holotype, USNM 205916, Bering Sea, off Saint George Island, 54 m, 90 mm; J. RNC 4731, Petrel Bank, 91 m, 78 mm; K, L. Castaneobuccinum triplostephanum Dall, 1919; K. USNM 108974, Kiska Island, 9 m, 75 mm; L. RNC 5054, SE of Buldir Island, 51 m, 63.8 mm.