Eastern melampus Melampus bidentatus, from here.

Belongs within: Pulmonata.

The Melampinae are a group of ellobiid gastropods differing from other members of the family in the presence of a planktonic larval stage (Frias Martins 1996).

Characters (from Frias Martins 1996): Protoconch heterostrophic, showing one-half of nuclear whorls above teleoconch. Reproductive system semidiaulic, with short spermoviduct, non-glandular pallial ducts, spermathecal duct entering at or near proximal end of vagina; penial complex very elongated, with marked proximal and distal portions, penis present at origin of distal portion, or absent with vas deferens opening at proximal end of penial complex through short, straight tube. Visceral nerve ring short.

<==Melampinae [Conovulidae, Melampacea, Melampidae, Melampodinae]
    |--Conovula Schweigger 1820 [Conovulinae] BR05
    `--Melampus Montfort 1810 [=Conovulus Bowdich 1822] BR05
         |--*M. luteus O27
         |--M. adamsianus Pfeiffer 1855 H09
         |--M. bidentatus Say 1822 BF89
         |--M. cristatus Pfeiffer 1855 H09
         |--M. granosa (Hombr. & Jacq. 1853) [=Auricula granosa] H09
         |--M. olivaceus Carpenter 1856 O27
         |--M. parvulus Pferiifer 1856 H09
         |--M. pulchellus (Petit 1843) [=Auricula pulchella] H09
         |--M. stutchburyi H09
         |--M. trifasciatus Kuster 1844 H09
         `--M. variabilis Gassies 1863 H09

*Type species of generic name indicated


[BR05] Bouchet, P., & J.-P. Rocroi. 2005. Classification and nomenclator of gastropod families. Malacologia 47 (1–2): 1–397.

[BF89] Burnham, B. H., & P. E. Fell. 1989. Distribution of Melampus bidentatus (Say) and Succinea wilsoni (Lea) within a tidal marsh in eastern Connecticut. Nautilus 103 (3): 109–112.

Frias Martins, A. M. de. 1996. Relationships within the Ellobiidae. In: Taylor, J. (ed.) Origin and Evolutionary Radiation of the Mollusca pp. 285–294. Oxford University Press.

[H09] Hedley, C. 1909. The Marine Fauna of Queensland: Address by the President of Section D. Australasian Association for the Advancement of Science: Brisbane.

[O27] Oldroyd, I. S. 1927. The Marine Shells of the West Coast of North America vol. II, pt I. Stanford University Press: Stanford University (California).

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