Iredalea

Iredalea is a small genus of sea snails, marine gastropod mollusks in the family Drilliidae.^[1][2]

Iredalea
Iredalea inclinata, abapertural view
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Subclass:	Caenogastropoda
Order:	Neogastropoda
Superfamily:	Conoidea
Family:	Drilliidae
Genus:	Iredalea Oliver, 1915
Type species
Iredalea subtropicalis Oliver, 1915
Species
See text
Synonyms[1]
Brephodrillia Pilsbry & Lowe, 1932

This genus was named in 1915 by Walter Oliver after Tom Iredale (1880–1972), an English-born naturalist who lived mainly in Australia.^[3]

Fossil species have been found in Pliocene strata of Italy and in Miocene strata of Indonesia; age range: 5.332 to 2.588 Ma.^[4][5]

Description

The narrow, solid and turreted shell has a fusiform shape. The protoconch consists of 4 whorls, with a sinusigera apex. The shell is axially sculptured by numerous slender and continuous riblets. The aperture measures about a third of the length of the shell. The short siphonal canal is wide. The anal sinus is deep and broad, separated from the body whorl by a callosity. A brown band on the periphery is a usual feature.^[3][6]

Species

Species within the genus Iredalea include:

• Iredalea adenensis Morassi & Bonfitto, 2013^[7]
• Iredalea agatho (W.H. Dall, 1918)
• Iredalea balteata (A.A. Gould, 1860)
• Iredalea exilis (Pease, 1868)
• Iredalea inclinata (Sowerby III, 1893)^[8]
• Iredalea macleayi (Brazier, 1876)^[9]
• Iredalea pupoidea (H. Adams, 1872)
• Iredalea pygmaea (Dunker, 1860)
• Iredalea subtropicalis Oliver, 1915^[10]
• Iredalea thalycra (J.C. Melvill & R. Standen, 1896)
• Iredalea theoteles (Melvill & Standen, 1896)

Species brought into synonymy

• Iredalea acuminata (J.W. Mighels, 1848): synonym of Pyrgocythara mighelsi (Kay, 1979)
• Iredalea ella (Pilsbry & Lowe, 1932): synonym of Brephodrillia ella Pilsbry & Lowe, 1932
• Iredalea (Brephodrillia) perfecta (Pilsbry & Lowe, 1932): synonym of Brephodrillia perfectus Pilsbry & Lowe, 1932