Description
Author: Jan Delsing
Text ID: 93276
Text Type: 1
Page: 0
Created: 2019-04-22 20:27:14 - User Delsing Jan
Language: EN
Text function: [[t:1330255,textblock=93276,elang=EN;Description]]
A single shell from Station 244 belongs to the same group as the previous species [Triphora sceptrum], from which it differs by its considerably smaller size, the apex is similar to the one of T. regia, whose sculpture is much coarser; T. concatenata Melv. (Proc. malac. Soc. London, v. 6 p. 162 t. 10 f. 9) from the Gulf of Oman is also similar, but this species has only one keel on the apex. The first few whorls (about 1-2 whorls) of the protoconch are missing, there are about 16 whorls, the last ones are slightly larger and form a slender shell. The first whorls [apex] are yellowish-brown, with two spiral keels and axial riblets, the following whorls are whitish, very shiny, with a slightly tubercled cord under the suture and two cords of equal size with compressed tubercles of moderate size, which lie just one above the other. The last whorl is angulated, and on the base there are two strongly drawn cords. The siphonal canal is slightly curved. The aperture is slightly damaged. Height 6.25 mm, diameter 1.25 mm.
Diagnosis
Holotype height 6.4 mm. Shell very slender, conical, with flat whorls. Teleoconch of 12 whorls, which have three tubercled spiral cords; the first is present since the first teleoconch whorl, and always smaller than the other two. Last whorl with a fourth weakly tubercled spiral cord while the base has two finer and smoother cords. Multispiral apex of at least three whorls, but the very first ones are missing; the protoconch whorls bear two strong keels and axial riblets. Teleoconch colour white, whereas the protoconch is yellowish; however, both colours may be faded, because the holotype was dead collected.
Albano, P. & Bakker, P.A.J., 2016, Annotated catalogue of the types of Triphoridae (Mollusca, Gastropoda) in the Museum für Naturkunde, Berlin, with lectotype designations