NMITA: Neogene Marine Biota of Tropical America

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IV. Subgenus Arayina Jung, 1989.

Morphologic Description: protoconch 1 1/2 volutions; outer lip protoconch sigmoid; sculpture on early teleoconch present; keel on early teleoconch whorls present; sculpture on late teleoconch present; axial sculpture predominant on late teleoconch; spiral sculpture predominant on early teleoconch; parietal ridge absent; posterior canal weak; thickness outer lip strong; outer lip weakly extended adapically; anterior canal weakly recurved; dorsal hump absent or weak; hump to the left of aperture absent.

• S.(A.) arayana J.Gibson-Smith, 1974
• S.(A.) humboldti (Rutsch, 1934).

Return to Strombina genus description.