Malacology
Malacology is the study of mollusks. This includes animals like octopus, snails, slugs, and clams. It is the second largest phylum of animals, making them one of the most successful groups on the planet. There are over 80,000 described species of mollusks with many more left to be discovered. Mullusca is composed of 8 recognized classes including Cephalopoda, Gastropoda, Polyplacophora, Scaphapoda, Monoplacophorans, the Aplacophorans, Caudofoveata and Solenogastres, and Bivalvia.
Dwarf Globelet
(Bland, 1861)
Inflectarius downieanus
Class:
Order:
Family:
Gastropoda
Stylommatophora
Polygyridae
ANSP 635 [topotype]
Ecological Information
Native/Inavsive:
Native
Nature Serve Conservation Status:
G3: Vulnerable
Median Size:
10
Height:
Width:
13.5
Taper:
0.2
Taxonomic Information
Helix downieana
Original Combination:
Etymology
Original Description:
Shell umbilicate, umbilicus nearly covered, subglobose, thin, subpellucid,with obsolete rib-like striae, decussated with crowded microscopic spiral lines, greenish horn-colored; spire short, obtuse; whorls five, convex, the last tumid, anteriorly some-what gibbous, scarcely descending, constricted; aperture oblique, lunate-oval; perist. white, labiate, reflected, right margin expanded, columellar margin angularly dilated, nearly covering the umbilicus. Diam. maj. 10 1/2, min 9 1/2, Alt. 6 mill.
Original Description Citation:
Bland, T. (1861). Remarks on certain species of North American Helicidae. Annals of the Lyceum of Natural History of New York. 7(30): 420-446 (Dec. 1861), 7(31): 447-448, plate 4 (Feb. 1862)., available online at https://www.biodiversitylibrary.org/page/16227889
Citations
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