BOUCHET, Fedosov & Puillandre & Herrmann & Kantor & Oliverio & Dgebuadze & Modica & Bouchet, 2018

KANTOR & BOUCHET GEN. NOV.

( FIG. 18M)

Type species: Cancilla meimiaoae Huang & Salisbury, 2017 ; OD, herein.

Diagnosis: As the genus is established primarily based on the molecular data, and its recognition based on the morphology is problematic, we do not provide a formal diagnosis.

Description (based on the type species, adapted from Huang & Salisbury (2017): Shell medium sized (50– 82 mm), fusiform, with high spire and long, stout siphonal canal. Protoconch multispiral, cyrtoconoid, of about three glossy whorls. Teleoconch of up to ten gently convex whorls; suture distinct. Sculpture of rounded spiral cords, intersected by closely set, slightly prosocline axial riblets, forming fine beaded sculpture on early spire whorls. On last adult whorl cords more widely set, and beaded sculpture indistinct, as axial riblets are well pronounced in interspaces between spiral cords only. Siphonal canal stout, deeply notched, slightly recurved at its tip. Aperture elongate, its outer lip evenly convex throughout its length. Inner lip calloused, with four closely set fine columellar folds at its mid-height. Shell white with irregular yellow or brownish blotches.

Distribution: Indo-Pacific, bathyal depths.

Species included: Cancillopsis meimiaoae ( Huang & Salisbury, 2017) 1 comb. nov., † C. acuminata (Shuto, 1969) 3 comb. nov.

Etymology: The name Cancillopsis refers to the close resemblance between C. meimiaoae , the type species of the new genus, and species of Cancilla . Gender feminine.

Remarks: Cancillopsis meimiaoae shows a notable resemblance to the species of the imbricariine genus Cancilla as well as to the species of Profundimitra gen. nov. and Fusidomiporta gen. nov., while showing no phylogenetic affinity to either of them. A visible concavity at the transition of shell base to the siphonal canal distinguishes the new genus from similarly sculptured Cancilla species. We hypothesize that Cancillopsis gen. nov. is more closely related to the Domiporta group of Mitrinae , and so we provisionally place it in Mitrinae . However, a more comprehensive taxon sampling of the deep-water Mitridae is obviously needed to delineate these convergent deep-water lineages and to clarify affinities of Cancillopsis gen. nov.

GENUS PSEUDONEBULARIA FEDOSOV, HERRMANN ,