Alcadia hjalmarsoni
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| Alcadia hjalmarsoni | |
|---|---|
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Order: | Cycloneritida |
| Family: | Helicinidae |
| Genus: | Alcadia |
| Species: | A. hjalmarsoni |
| Binomial name | |
| Alcadia hjalmarsoni (L. Pfeiffer, 1856) | |
| Synonyms[1] | |
| |
Alcadia hjalmarsoni is a species of an operculate land snail, terrestrial gastropod mollusk in the family Helicinidae.[1]
The height of the shell attains 5 mm, its greatest diameter 8 mm.
(Original description in Latin) The conoid-depressed shell is somewhat solid, smooth and slightly shiny. It is tawny with a purplish tint near the suture and aperture. The spire is convex and somewhat pointed. There are 4 whorls, which are somewhat flat and gradually increase in size. The body whorl is depressingly rounded with an arched fissure near the columella. The aperture is nearly diagonal and somewhat semi-oval. The columella descends at a right angle from the base, is slightly twisted, and scarcely recedes, emitting a thin, defined callus. The peristome is obtuse and yellow-bordered, with the right margin slightly curved forward. The operculum is thin and tawny.[2]
