Coralliophilinae (Neogastropoda: Muricidae) from the southwest Pacific Author Oliverio, Marco John T. Huber text Mémoires du Muséum national d'Histoire naturelle 2008 196 481 586 journal article 978-2-85653-614-8 1243-4442 Coralliophila mitraeforma Kosuge, 1985 Figs 37, 38, 159 Coralliophila mitraeforma Kosuge, 1985b: 56 , pl. 21, figs 1-2. TYPE MATERIAL. — Holotype IMT 85-21 [not seen], figured by Higo et al . (2001: 66 , G2401). TYPE LOCALITY. — Mactan, Cebu , Philippines . MATERIAL EXAMINED. — Norfolk Ridge . SMIB 8: stn DW 157, 250 m , 2 dd (Figs 37, 38, 159). 24°46’S , 168°08’E , 235-300 m , 1 dd. Wallis and Futuna . MUSORSTOM 7: stn CP 505, Futuna Island, Loyalty Ridge .VOLSMAR: stn DW 41, 22°19’S , 168°41’E , 195- 14°19’S , 178°04’W , 245-400 m , 1 lv . DISTRIBUTION. — Pacific Ocean: off Danjo Islands, Western Kyūshū (Higo et al . 1999: 217; Tsuchiya 2000). Norfolk Ridge, Loyalty Ridge, Wallis and Futuna , live in 245-400 m , empty shells in 235- 250 m . Southward range extension in the west Pacific. REMARKS. — Protoconch, partly eroded, of 2.5+ conical whorls, 690+ Μm high, 770 Μm wide at the base. Protoconch- II with 2 spiral keels (the abapical one starting nearly 1 whorl before the adapical one), sculptured with a series of subsutural prosocline threads and a series of oblong tubercules over each keel; a diffuse granulation is present in the interspaces, and gives rise to spiral threadlets over the tubercles. Specimens with a total height/apertural height (h/a) ratio greater than 1.7 are easily identified as C. mitraeforma . However, shells with a ratio of 1.7 or less can hardly be separated from slender specimens of C. solutistoma . A specimen from Futuna , collected at stn CP 505 together with a living specimen of C . mitraeforma , has been referred (above) to C. solutistoma on the basis of the low h/a ratio (1.5) and the pronounced shoulder angle.