COCCIDIIDEA 



471 



SUBORDER I. SCHIZOGREGARINARIA Dofiein, 1909. 

 Synonyms, — SchizogregarincB Minchin, 1903; Schizocystina Poche, 19 13. 

 Reproduction by schizogony and sporogony. 



GBTiBT2i..~ScMzocystis Leger, 1900, in the intestine of Cevatopogon : Ophryo- 

 cy5//5 Schneider, 1884, in the Malpighian tubules of beetles. 



SUBORDER II. EUGREGARINARIA Dofiein, 1901. 

 Reproduction as usual by sporogony. Schizogony very rare, if present at 

 all, and only in the earliest cytozoic stages. The Eugregarinida are divided 

 into two tribes. 



Tribe i. Acephalina Delage Herouard, 1896. 



: Synonym. — Monocystidea Haeckel, 1866. No epimerite and no septa. 



Genera (eighteen described by Minchin). — Monocystis Stein, 1848, parasitic 

 in the vesiculae seminales and body cavities of the Oligochsetae and Cyclopidse; 

 Zygocystis Stein, 1848, in Lumhricus agvicola ; Zygosoma Labbe, 1899; Lankes- 

 teria Mingazzini, 1 891, in Ascidians. 



Tribe 2. Cephalina Delage Herouard, 1896. 



Synonym. — Polycystidea Haeckel, 1866, With epimerite, and with or with- 

 out a septum in the body. 



SuBTRiBE I : Gymnosporea Leger. — -Cyst vath naked sporozoitcs 



(gymnospores) . 

 Family i : Aggregatid^ Labbe, 1899. 



Genus. — Aggregata Frenzel, 1885. Sporozoites grouped about residual 

 masses. 



Family 2: Porosporid^ Labbe, 1899. — Each sporoblast giving rise to 

 numerous sporozoites grouped round a residual mass. 



Genus. — Poyos/?om Schneider, 1875. P. ^f^aw^^a in the lobster. 



Subtribe 2: Angiosporea. — Spores well developed. 



Family i: Gregarinid^e Greene, 1859.- -Trophozoites with simple 

 epimerites. 



Genera. — Gregarina T>niovLY , 1828. Epimerite conical or knobbed . Species 

 found in cockroaches, earwigs, meal-worms, and in the intestines of other 

 insects. Gamocystis in the cockroach; also Eirmocystis, Hyalospora, Euspora, 

 Sphcsrocystes, Cnemidospora, Stenophora. 



Other families are Didymophyidae, Dactylophoridae, Actinocephalidse, 

 Acanthosporidse, Monosporidae, Stylorhynchidae, and Doliocystidse. 



ORDER II. COCCIDIIDEA. 



Synonyms. — C occidiomorpha Doflein, 1901; Eimeridea Poche, 

 1913- 



Definition. — Telosporidia, parasitic, as a rule, in epithelial cells 

 of vertebrates and invertebrates. Reproduction always by both 

 schizogony and sporogony. 



Remarks. — -The Coccidiidea Were recognized as long ago as 1839 

 by Hake, Who did not know that they Were animals, that discovery 

 being made by Remak (1845); while Lieberkiihn in 1854 showed that 

 they v/ere allied to Gregarines. Leuckart (1876) gave them the 

 name Coccidium, while vSchaudinn in 1900 first described a full and 

 complete life-history of Coccidium schuhergi, which will be taken as 

 the type. - 



