Pilsbry's original text (the type description) reads as follows: HOLOSPIRA MESOLIA, n. sp.

After that the whorls are nearly smooth, rather glossy, and the shell diminishes slowly in diameter to the base.

This handsome Holospira is most closely related to H. semisculpta Stearns, which was described from a canyon above San Carlos, Chihuahua, a place on the Mexican side of the Great Bend of the Rio Grande.

Dr. Dall and Dr. Bartsch have kindly compared specimens with the type of semisculpta, and report that the new species "differs in the profile, which in your shell is more contracted toward the base, rendering it spindle-shaped, while the former is more cylindrical.

The ribs in yours do not extend over so many of the basal whorls, and the expanded peristome gives it a very distinct appearance.

With the Holospira were found specimens of Polygyra texasiana texasensis and a Succinea.This species occurs in Texas,[2] USA.