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Pupa iostoma Pfeiffer, 1854

Thumbnail of specimen image. Click here to view larger version of image.


Pupa iostoma Pfeiffer, 1854:204; Pilsbry & Vanatta, 1896:329; Clench, 1957:149.

Original Description: Click to view

Geographic Distribution: Cuba.

Type Locality: From the south coast of Cuba, living on Opuntia.


Cerion iostomum Pfeiffer. Pl. XI, fig. 14.

This species has not been figured. It was described from the south coast of Cuba living among Prickly Pears. Subsequently it was reported from Turk's Island and Great Inagua (see Bland, Ann. Lye. Nat. Rist., N. Y., XI, p. 85), but having examined spec­imens from these localities, so labelled by Bland, we find them to be totally distinct species, having little save the purplish-brown color of the mouth, in common with the true Pupa iostoma of Pfeiffer's first description.

The specimen shown in our figure answers to the description of Pfeiffer in all respects save that the median whorls are only obsoletely ribbed, hardly "distanter plicato-costata" -more like the" var. β." The post-nepionic whorls of the cone are "conferte costulatum;" the cone itself "corneo-marmoratum", suture conspicuously "exserto­marginata," and the corrugation of last whorl and color of aperture ("intus violacea") are likewise in agreement. The specimen figured is 2 mm. shorter than Pfeiffer's. Alt. 30, diam. 12; alt. of aperture 12 mm.

Pfeiffer's type measured, alt. 32, diam. 12; alt. of aperture 13 mm." (Pilsbry & Vanatta, 1896:329).

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