Gemmula martini: Range — Pliocene of Timor; Recent, off East Africa and off Borneo in deep water.
Remarks — This species along with aethiopica Thiele, sibogae Schepman and sihukoensis form a group characterised by the peripheral carina set low on the spire whorls, almost at the lower suture, which results in a rather Hat-sided profile to each whorl in the spire.
Description — Adult shell 46 to 77 mm. (about 2 to 3 inches) in height, solid, broadly fusiform, uniformly dull-white, without colour markings. Adult whorls 11, outlines straight except for a slightly projecting, broadly rounded sinus-rib set just above the lower suture. Sculpture simple, of smooth narrowly rounded but relatively strong spiral cords. Above the peripheral carina the interspaces are without interstitial spirals but below the carina, over the base, neck and canal, all the cords have one or two spiral threads between them. The peripheral carina is composed of 2 or 3 closely spaced spiral cords which are densely studded with vertically and partially fused gemmules, 38 to 50 per whorl. Spire equal to height of aperture plus canal, angle 35° to 37°.