A callosity is a circumscribed thickening of the stratum cornium.
Sooner or later the centre of a callosity breaks down into a bluish, unhealthy, indolent, superficial ulcer, secreting a small quantity of watery pus, and with an offensive odor.
The small epiplastral callosity in spinifer is located at the medial angle and does not extend posterolaterally to cover the entire surface of the epiplastron as it may in muticus (Fig.
Large individuals of muticus usually have small, ovoid callosities on the preplastra, and a well-developed, angular callosity on the epiplastron (Fig.
Seemingly, the callosity on the epiplastron appears prior to those on the preplastra; I have not seen any plastra having callosities on the preplastra and lacking a callosity on the epiplastron.
They are distinguished from other genera of the family by their lenticular form and the orbicular callosity of the under surface.
The straight, callous, smooth edge of the columella and the callosity serve to distinguish this genus from Nerita, Neritina, Neritopsis and Helix.
Defn: A callosity with inflamed edges, on the back of a horse, under the saddle.
Defn: A disease affecting the splint bones, as a callosity or hard excrescence.
Such callosity may be produced, if the skin is continually compressed, singed, pricked, or injured in any other manner.
The aperture and the columellar callosity are flesh-tinted, with chestnut trimmings.
The aperture is typical of the genus, though less strongly marked by internal callosity on the outer lip and with less prominent teeth than in /C.
A disease affecting the splint bones, as a callosity or hard excrescence.
A callositywith inflamed edges, on the back of a horse, under the saddle.
The columella has a callosityvery evident in the species Pullus and Thersites.
The callosity of Smollett's midshipman, who spat in the pressed man's face when he dared to complain of his sufferings, and roughly bade him die for aught he cared, was characteristic of the service.
To this callosity of nature it was due that William Castle, a foreign denizen of Bristol who had the hardihood to incur the marital tie there, was called upon, as related elsewhere, to serve at sea in the very heyday of his honeymoon.
Lip a little thickened, edged with reddish brown, only slightly expanded on the right side, more dilated below, produced into a thin transparent callosity over the umbilical region, united above to the upper extremity of the peristome.
Aperture somewhat semicircular and oblique, small; peristome slightly expanded; umbilical callosity yellowish or pellucid whitish, defined towards the base of the columellar margin.
