L. testiculi_, both
from different species of _Glomeris_, a Myriapod; the former inhabits
the Malpighian tubules, the latter the testis.

Fam. DISPOROCYSTIDAE, Leger. The oocyst contains 2 spores.

Genus 1. _Cyclospora_, A. Schneider. Spores dizoic, i.e. with two
sporozoites. _C. glomericola_, from the intestinal epithelium of
_Glomeris_, and _C. caryolytica_, from the intestinal epithelium of
the mole, intranuclear.

Genus 2. _Diplospora_, Labbe. Spores tetrazoic. _D. lacazei_, from
many birds, is the best-known species; and others have been described
from different Sauropsida. _D. lieberkuhni_ is an interesting form
occurring in the kidneys of the frog, which it reaches by way of the
circulation.

Genus 3. _Isospora_, Schn. Spores polyzoic. Founded for _I. rara_,
parasitic in the black slug (_Limax cinereo-niger_). Many authors
consider that Schneider was mistaken in attributing many sporozoites
to this form, and would unite with it the genus _Diplospora_.

Fam. TETRASPOROCYSTIDAE, Leger. The oocyst contains 4 spores.

Genus 1. _Coccidium_,[7] Leuckart. The spores are dizoic and the
sporocysts rounded or oval. A very large number of species are known,
mostly from Vertebrate hosts. _C. cuniculi_ (= _C. oviforme_) from the
rabbit (intestine and diverticula), but also occurring sometimes in
other domestic animals; C. falciformis, from the mouse; _C. faurei_
from sheep; and _C. schubergi_, from _Lithobius_ (a centipede), are
among the best-known forms. All of them may cause disastrous epidemics
of coccidiosis.

Genus 2. _Paracoccidium_, Laveran and Mesnil. This genus is
distinguished from _Coccidium_ by the fact that the sporocysts become
dissolved up in the oocyst, thus leaving the 8 sporozoites unenclosed,
recalling the condition in _Legerella_. _P. prevoti_, unique species,
from the frog's intestine.

Genus 3. _Crystallospora_, Labbe. Spores also dizoic, but having the
form of a double pyramid. _C. crystalloides_ from a fish, _Motella
tricirrata_.

Genus 4. _Angeiocystis_, Brasil. Apparently 6 sporozoites, but the
only species, _A. audouiniae_, has only been briefly described; from a
Polychaete (_Audouinia_).

Fam. POLYSPOROCYSTIDAE, Leger. The oocyst contains numerous spores.

There are several genera with monozoic spores, characterized by
variations in the form and structure of the sporocysts, e.g.
_Barroussia_, Schn. (fig.