. Annals of the Lyceum of Natural History of New-York. Science. Helix Jamaicensis, etc. 151 sus, Shuttl., Cyclostomus Aminensis, Pfr., Chondropoma serraticosia, Wein., Helicina rugosa, Pfr., unci Paivana, Pfr., Helix pubescens? Pfr., crispata and indixtincta, Fei\, cepa, Mull., Cylindrella gracilicollis, Fer., and Macroceramus Klatteanus, Bland. Species not yet determined, among them an Oleacina, believed to be new, will be described on another occasion. Helix Ingersollii, now sp. (Mcrophysa). T. umbilicata, discoidea, tenuis, translucida, sublevis, alba; spira plana, vertice, subimmersa; sutu
. Annals of the Lyceum of Natural History of New-York. Science. Helix Jamaicensis, etc. 151 sus, Shuttl., Cyclostomus Aminensis, Pfr., Chondropoma serraticosia, Wein., Helicina rugosa, Pfr., unci Paivana, Pfr., Helix pubescens? Pfr., crispata and indixtincta, Fei\, cepa, Mull., Cylindrella gracilicollis, Fer., and Macroceramus Klatteanus, Bland. Species not yet determined, among them an Oleacina, believed to be new, will be described on another occasion. Helix Ingersollii, now sp. (Mcrophysa). T. umbilicata, discoidea, tenuis, translucida, sublevis, alba; spira plana, vertice, subimmersa; sutura impressa; anfr. 5-i convexiusculi, lente ac- rescente's, ultimus non descendens, infra peripheriam convexior; umbili- cus fere 1 mill, latus; apertura subverticalis, altior quam lata, lunaris; perist. simplex, acutum, marginibus remotis, columellari brevissime pa- tente, basali subsinuato. Shell umbilicatcd, discoidal, thin, translucid, nearly smooth, white; spire flat, summit subimmersed; suture impressed; whorls 5k rather con- vex, slowly increasing, the last not descending, more convex below the periphery; breadth of umbilicus nearly 1 mill.; aperture subvertical, higher than broad, lunate; perist. simple, acute, margins remote, columel- lar margin slightly reflexed, basal margin subsinuate. Diam. maj. 4; min. 3|; alt. 2jz Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Lyceum of Natural History (New York, N. Y. ). New-York :
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