Cochlespiridae

Cochlespiridae
Apertural view of a shell of Aforia circinata
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
(unranked):	clade Caenogastropoda clade Hypsogastropoda clade Neogastropoda
Superfamily:	Conoidea
Family:	Cochlespiridae Powell, 1942
Genera
See text

Cochlespiridae is a taxonomic family of predatory sea snails, marine gastropod mollusks in the superfamily Conoidea.^[1]

This family is not well differentiated morphologically, and there is poor congruence between the molecular and shell characters. Its limits are uncertain. Even the contents of most of the genera are in need of revision.

The family is composed of some genera that used to belong to the subfamily Cochlespirinae, in the family Turridae. This family has no subfamilies.

General characteristics

This family consists of moderately sized shells, usually between 20 to 30 mm, but in Nihonia maxima the length of shell can reach 128 mm. The shell of Aforia magnifica even reaches 150 mm. The shell is turriculated and fusiform with a long, sharp spire. The aperture is ovate. The columellar margin is smoot. The outer lip has a narrow profound anal sinus on the subsutural ramp. The open siphonal canal is long, narrow, and straight. The operculum has a terminal nucleus.

The foot of the animal is truncated anteriorly, obtuse posteriorly. The eyes are located externally near the base of cylindrical tentacles. The radula formula is 1-0-R-0-1 ^[1]

Genera

•  ? Abyssaforia Sysoev & Kantor, 1987
• Aforia Dall, 1889
• Ancistrosyrinx Dall, 1881
•  ? Apiotoma Cossmann, 1889
•  ? Clavosurcula Schepman, 1913
• Cochlespira Conrad, 1865
•  ? Dallaforia Sysoev & Kantor, 1987
•  ? Nihonia McNeil, 1961
• Sibogasyrinx Powell, 1969
•  ? Steiraxis Dall, 1896

Genera brought into synonymy

• Coronasyrinx Powell, 1944 accepted as Cochlespira Conrad, 1865
• Danilacarina Bozzetti, 1997 accepted as Aforia Dall, 1889
• Irenosyrinx Dall, 1908 accepted as Aforia Dall, 1889
• Pagodasyrinx Shuto, 1969 accepted as Cochlespira Conrad, 1865

References

1. ^ ^{a b} P. Bouchet, Yu. I. Kantor, A. Sysoev & N. Puillandre (2011). "A new operational classification of the Conoidea (Gastropoda)". Journal of Molluscan Studies 77 (3): 273–308. doi:10.1093/mollus/eyr017.