The nucleus of a living specimen is surrounded by a hyaline, strongly refractile chromidial mass, arranged in the form of a ring. Chromatin stains colour it darkly. _Asexual multiplication_ (fig. 13, _b_), which takes place in fæces, follows a similar course to that of allied forms (_e.g._, _Euglypha_, _Centropyxis_). It commences by the cytoplasm issuing from the orifice of the shell and assuming the shape characteristic of the mother organism, but in a reverse position. The nucleus then divides by mitosis, when the daughter nuclei move apart from one another. The chromidial ring also divides into two portions by a process of dumb-bell like constriction. The one daughter nucleus remains in the mother organism, the other moves towards the daughter individual, which then separates from the parent. [Illustration: FIG. 13.--_Chlamydophrys enchelys._ _a_, free, motile form, showing nucleus, equatorial granules, vacuoles and pseudopodia; _b_, dividing organism. × 760. (After Cienkowski.)] In this species plasmogamic union of two or more individuals (up to twenty) is frequently observed. Such colonies may similarly divide, and in this way monstrosities frequently arise. When drying of the fæces, or deficiency of food occurs, encystment takes place apparently spontaneously. The whole body, as stated by Cienkowski, issues from the shell, assumes a spherical shape (probably with discharge of water) and becomes surrounded with a thick membrane (fig. 14). After the addition of water and the escape of the encysted _Chlamydophrys_, a new shell must be formed. Schaudinn, who has not given a more detailed description of the process of encystment in this species, but refers to Cienkowski and to similar observations made on _Centropyxis_, states of the latter that the encystment takes place within the shell.