Popis
Autor: Jan Delsing
Text ID: 119381
Text Type: 1
Page: 0
Založeno: 04.12.2022 17:18:07 - Uživatel Delsing Jan
Language: EN
Odkazová funkce: [[t:1143586,textblock=119381,elang=EN;Popis]]
The shell is small, high, conic, with about seven coarsely sculptured whorls separated by deeply excavated sutures. The sculpture consists of three noded primary spiral cords on each whorl; the first, or lowest, forms a blunt, but not prominent, peripheral keel on the body whorl and an overhand on the whorls of the spire; the second cord, somewhat smaller, encircles the middle of each whorl; and the third and smallest borders the suture above; the interval between each pair of primary cords carries a fine, spiral thread. The base is flattened, sloping inward toward the middle; it carries at its outer edge a prominent, smoothish cord along which the coiling proceeds, hence it is concealed in the sutures on the spire. A series of nine somewhat alternating cords extends from the pillar outward toward a wide, flat, marginal circle marked with three smaller raised threads. Measurements.—Height 8.7 mm, diameter 7.7 mm; holotype. Holotype.—USNM No. 701165, PILLSBURY Sta. P-500.
Material Examined.—The holotype, a single specimen without soft parts, from Sta. P-500, Gulf of Panama, 7°59.7'N, 79°49.7'W, 53 m, 2 May 1967.
Olsson A A - 1972 - Mollusks from the Gulf of Panama collected by R V John Elliott Pillsbury 1967