. The conchologist's book of species : containing descriptions of six hundred species of univalves. Mollusks; Gastropoda. NAUTILUS. ARGONAUTA. 145 with transverse rufous flames gradually ceasing towards the lip; diam. 7f. W. Nautilus. 13. 1. N. UMBiLiCATULUs. Sub-orbicular^ umbili- cated on both sides; all the whorls manifested within the umbilicus ; sides of the whorls obtusely wrinkled; aperture rounded^ heart-shaped; colour much resembling the preceding. ARGONAUTA. Shell univalvey unilocular, involute, very thin; spire bicarinate, tuberculous, re-entering the aper- ture, A. ARGO. Large,
. The conchologist's book of species : containing descriptions of six hundred species of univalves. Mollusks; Gastropoda. NAUTILUS. ARGONAUTA. 145 with transverse rufous flames gradually ceasing towards the lip; diam. 7f. W. Nautilus. 13. 1. N. UMBiLiCATULUs. Sub-orbicular^ umbili- cated on both sides; all the whorls manifested within the umbilicus ; sides of the whorls obtusely wrinkled; aperture rounded^ heart-shaped; colour much resembling the preceding. ARGONAUTA. Shell univalvey unilocular, involute, very thin; spire bicarinate, tuberculous, re-entering the aper- ture, A. ARGO. Large, involute, very thin, white, sides transversely ribbed; ribs frequent, forked near the keel; carinae approximate, tubercular, partly blackish red; tubercles small, very nu- merous. S. 485. H. 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 Hanley, Sylvanus Charles Thorp, 1819-1899. London : H. Washbourne
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Keywords: ., bookcentury1800, bookdecade1840, booksubject, booksubjectmollusks
