. A conchological manual. Shells. INTRODUCTION. 29 In some cases the columella is swelled into a varicose mass; as in Oliva, Ancillaria, &c. ; it is then described as tumid or varicose. It is sometimes tortuous, and sometimes straight, and is susceptible of many variations, too minute and par- ticular to be described in this part of the work. Columellar 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 Sowerby, G.
. A conchological manual. Shells. INTRODUCTION. 29 In some cases the columella is swelled into a varicose mass; as in Oliva, Ancillaria, &c. ; it is then described as tumid or varicose. It is sometimes tortuous, and sometimes straight, and is susceptible of many variations, too minute and par- ticular to be described in this part of the work. Columellar 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 Sowerby, G. B. (George Brettingham), 1812-1884; Henderson, J. B. (John Brooks), 1870-1923, former owner. DSI; Dall, William Healey, 1845-1927, former owner. DSI. London : Henry G. Bohn
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