Conus lisboae (Maury, 1925)

Shell small, conic, with a low spire marked od each of its volutions with three incised, spira lines. These spirals on the spire are so fine that they are visible only with lens. The last volution is ornamented with regular, equidistant, narrow, spiral grooves which extend from the base almost to the shoulder of the shell. They then terminate abruptly as though the last groove had been omitted. There are about four grooves to a distance of five millimeters. They do not bear a spiral thread as in the preceding species (Conus whitei). Approximate height of shell 20 mm., greatest width 10 mm.⁽¹⁾

The low spire and shorter, broaded form differentiate this shell from Conus restitutus White. It recalls certain of the small, sulcated Conus from the Dominican Miocene ⁽¹⁾.

This pretty and well characterized shell is named in honor of Dr. Miguel Arrojado Lisboa, in appreciation of his valuable work on the Permian of nprthern Brasil.

Conus lisboae ⁽¹⁾

Plate XI, fig. 18

mm. 20 x 10

Rio Pirabas

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Bibliografia Consultata

· (1) - Maury, C. J., 1925. Fosseis Terciarios do Brasil com Discripção de Novas Formas Cretaceas. Servico Geologico E Mineralogico, 4: 1 -705 

· (1a) - Maury, C. J., 1925. Fosseis Terciarios do Brasil com Discripção de Novas Formas Cretaceas. Servico Geologico E Mineralogico, 4: 1 -705