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| dct:abstract
| - Of the nominal species of Allochroa Ancey, 1887 described to date, only two are recognized: A. bronnii (Philippi, 1846), endemic to the Hawaiian Islands, and A. layardi (H. & A. Adams, 1855), distributed throughout the Indo-Pacific. Examination of the USNM collection revealed two additional species, A. nana Martins, n. sp. and A. tenuis Martins, n. sp., herein described. The anatomy of A. layardi is described and serves as the basis for determining the relationships of this genus within the Ellobiidae. Allochroa has a monaulic, entirely glandular pallial gonoduct and a wide visceral nerve ring with a long right parieto-visceral connective, confirming placement in the Pythiinae. Its close relationship to the Mediterranean and Eastern North Atlantic genus Ovatella Bivona, 1832 is indicated by similar apertural dentition, protoconch morphology of A. tenuis, and by the internal structure of the penial complex, where the penis appears as the development of one of the pilasters.
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| bibo:abstract
| - Of the nominal species of Allochroa Ancey, 1887 described to date, only two are recognized: A. bronnii (Philippi, 1846), endemic to the Hawaiian Islands, and A. layardi (H. & A. Adams, 1855), distributed throughout the Indo-Pacific. Examination of the USNM collection revealed two additional species, A. nana Martins, n. sp. and A. tenuis Martins, n. sp., herein described. The anatomy of A. layardi is described and serves as the basis for determining the relationships of this genus within the Ellobiidae. Allochroa has a monaulic, entirely glandular pallial gonoduct and a wide visceral nerve ring with a long right parieto-visceral connective, confirming placement in the Pythiinae. Its close relationship to the Mediterranean and Eastern North Atlantic genus Ovatella Bivona, 1832 is indicated by similar apertural dentition, protoconch morphology of A. tenuis, and by the internal structure of the penial complex, where the penis appears as the development of one of the pilasters.
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| dct:bibliographicCitation
| - Martins, A. M. de F. 1995. Systematic revision of <i>Allochroa </i>Ancey, 1887 (Pulmonata: Ellobiidae), with an account of the anatomy of <i>Allochroa layardi</i> (H. & A. Adams, 1855) and the description of two new species. <i>The Nautilus</i>, 109(1): 1-13.
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