Perirhoe Dall, 1908

Fedosov, Alexander E, Malcolm, Gavin, Terryn, Yves, Gorson, Juliette, Modica, Maria Vittoria, Holford, Mandë & Puillandre, Nicolas, 2019, Phylogenetic classification of the family Terebridae (Neogastropoda: Conoidea), Journal of Molluscan Studies The Malacological Society of London 85 (4), pp. 359-388 : 22

Genus Perirhoe Dall, 1908

( Fig. 10E )

Type species: Perirhoe circumcincta (Deshayes, 1857) ; OD.

Diagnosis: Shell small to medium-sized (<50 mm), solid; axial sculpture weak to obsolete; spiral sculpture of irregular punctate groves; subsutural band weakly defined.

Distribution: S Pacific, particularly New Caledonia.

Remarks: Perirhoe is close to the genus Oxymeris in terms of shell proportions; however, it can be readily differentiated from species of the latter by the distinct spiral grooves throughout the whorls’ height. The sculpture pattern of widely set spiral grooves in Perirhoe resembles that in some species of Terebra , but the latter group has notably more slender shells, with higher spire and less robust siphonal canal.

Included species:

Perirhoe circumcincta (Deshayes, 1857) 4;

Perirhoe valentinae (Aubry, 1999) 4 n. comb.

Figures

Figure 10. Genera defined solely by shell morphology. A. Terebra bathyrhaphe lectotype, NHMUK 1873.8.6.10/1, Gulf of Yedo, 35◦35'N, 139◦48'E, 6–25 fms (= 11–46 m), 24.8 mm. B. Hastulopsis melanachme lectotype, NMHUK 1873.8.6.11/1, Cape Sima, Japan, 18 fms (= 33 m), 17.8 mm. C. Terebra bifrons holotype, NHMUK 1968237, Japan, 51.0 mm. D. Gradaterebra scalariformis, SAM D-110176, Newland Head, S Australia, 20 fms (= 37 m), 12.1 mm. E. Terebra circumcincta holotype, NHMUK 1978150, Red Sea (erroneous?), 38.0 mm. F. Microtrypetes iola holotype, ANSP 155289, Mazatlan, Mexico, 20 fms (= 37 m), 14.0 mm.