. Mollusca ... Mollusks. CYCLOPHOEUS. 55 " With a general resemblance in form to G. indicus, Desli., it will be at once distinguished by the absence of a keel or acute spiral ribs, by the wider umbilicus, less developed peristome, and more elevated form. The very gradual arcuation of the columellar lip is also an essential character, detracting from the uniformity of the circular aperture. The sinus observable at this part, impinging on the plane of the aperture, is also conspicuous in C. indicus. " A variety occurs in which the shell is of a pale buff colour, darker towards the apex
. Mollusca ... Mollusks. CYCLOPHOEUS. 55 " With a general resemblance in form to G. indicus, Desli., it will be at once distinguished by the absence of a keel or acute spiral ribs, by the wider umbilicus, less developed peristome, and more elevated form. The very gradual arcuation of the columellar lip is also an essential character, detracting from the uniformity of the circular aperture. The sinus observable at this part, impinging on the plane of the aperture, is also conspicuous in C. indicus. " A variety occurs in which the shell is of a pale buff colour, darker towards the apex, the bands and markings being obsolete, and the colour of the peristome being equally vivid with that of the typical shells. Another thinner variety occurs in which the interior coloured lip is not ; (Benson.) 79. Cyclophorus spironema, Pfelffer. Cyclostoma {Cyclophorus) spironema, Pfeififer, Proc. Zool. See. 1854, p. 127 ; id., Mon. Pneum. Suppl. 1, 1858, p. 63 ; Suppl. 2, 1865, p. 67 ; Suppl. 3, 1875, p. 109. Cyclophorus (Litostylus) spironema, Kobelt & MoUendorfF, Nachr. Deuts. Malak. Ges. xxix, 1897, p. 106: Cat. Pneum. 1899, p. 18 ; Kobelt, Das Tierreich, Lief. 16, 1902, p. 104. Original description:—" C. testa umbilicata, subturbinato- depressa, solida, liris crebris filiforinibus sculpta, superne Isete castaneo et albido variegata; spira brevi, vertice acutiusculo; sutura submarginata; anfr. 4, convexis, rapide accrescentibus, ultimo juxta suturam subplanato, ad peripheriam rotundatum. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Blanford, William Thomas, 1832-1905; Godwin-Austen, Henry Haversham, 1834-1923; Gude, Gerard Kalshoven, 1858-; Preston, Hugh Berthon, 1871-. London, Taylor and Francis; [etc. , etc. ]
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