“Trophon coulmanensis.
(Plate I., figs. 4-4b.)
Shell fusiform, turreted, white within and without, ornamented with somewhat distant thin lamellæ, about ten on a whorl, which are produced at the upper part or shoulder of the whorls into erect hollow spines. Whorls 5, the two apical, forming the protoconch (fig. 4b), smooth, globose; the rest slopingly tabulated above, almost straight at the sides, but a little contracted below towards the suture, sculptured between the lamellæ with fine spiral striæ, which are crossed by very fine lines of growth, producing a textured appearance. The body-whorl is contracted below the middle and terminates in a slender oblique recurved snout. The aperture is elongate-pyriform, with the canal, exceeding half the entire length of the shell. Columella contorted, covered with a smooth, glossy, pellucid callus:
Length, 13 millim.; diam., 7; aperture and canal, 7 millim. long, 2.50 broad.
Off Coulman Island, 100 fathoms.
Only a single specimen of this species was obtained. In general form it is very like the var., gunneri of the northern T. clathratus (see Sars, Moll. Reg. Arct. Norvegiæ, pl. XV., figs. 11, 11a). It may be separated on account of its much larger protoconch, and more distinct sculpture between the lamellæ. The latter are rather more erect and spine-like at the upper part of the whorls, and the aperture is entirely devoid of colour.”
(Smith, 1907: 3-4)
Trophon coulmanensis is a species of sea snail, a marine gastropod mollusk in the family Muricidae, the murex snails or rock snails.[1]
The shell can grow to be 13 mm (0.51 in) to 23 mm (0.91 in) in length.
It can be found in the South Shetland Islands.
Trophon coulmanensis is a species of sea snail, a marine gastropod mollusk in the family Muricidae, the murex snails or rock snails.
