Scientific Name: Vertigo bollesiana
Common Name: Delicate Vertigo
Etymology: Vertigo comes from the Latin word vertō which means whirling or spinning. I'm not positive on how this species received its common name but it is described as being more transparent and delicate in color than its closest relative Vertigo gouldi and maybe that's how the name stuck.

Classification Description
Domain: Eukarya Membrane bound organelles a nucleus
Kingdom: Animalia Multicellular and heterotrophic organisms lacking a cell wall
Phylum: Mollusca Soft bodied coelomates, many have calcium carbonate shell, body divided into three main regions the mantle, visceral mass, and muscular foot
Class: Gastropoda Greek origin meaning stomach and foot, originally it was believed that animals in this group moved along on their bellies. Animals in this class have a muscular foot on their ventral side used for locomotion (Morse, E. 1868)
Order: Stylommatophora Pulmonate gastropods with two pairs of invaginable tentacles, the anterior tentacles bears the eyes at their tip
Family: Pupillidae Organisms in this family have tiny lamellae on the opening of the shell
Genus: Vertigo No oral tentacles, has four to six whorls, oblong shell, four to six lamellae that protrude in into the aperture
Species: V. bollesiana Shell is minutely perforate, delicately striated, subtranslucent, extremely small crest close behind the lip and rather large oblique depression over the palatal folds. Peristome is subreflected and thickened with five teeth (Pilsbry, H. 1948).