Also see:
Protoconch SEM Fig. 2 Mullineaux et al. (1996)
Larval photograph in Desbruyères et al. (2006) p. 104
| Size under dissecting microscope: 240µm Size under compound microscope: 230-240µm |
| Morphology: Cyathermia naticoides has a moderately large protoconch. The posterior is covered by coarse reticulate sculpture which gives the appearance of bubbles under the light microscope. The anterior portion is smooth. The aperture is slightly sinuous and there is a medium-width rim. |
| Frequency: Pump EPR 1998-2000: Common Pump EPR 2004: Common Trap EPR 2004-2005: Common |
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The protoconchs can be easily confused with those of Neomphalus fretterae, although the adults look quite different. The chief differences between the two are that Neomphalus has finer reticulate sculpture and the outer edge flares out at the aperture. The aperture rim is wider in Neomphalus than in Cyathermia, tapering toward the posterior edge. |
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