PROTOZOA WITHOUT MOTILE ORGANS 63 



sporocysts. Here, if we were to be strictly consistent, "\ve would advise, 

 with ^linchin, the inclusion of the malaria-causing organisms, and group the 

 other hemosporidia with the genera included under the Sporocystinea. But it 

 does not seem opportune at the present time to gi^•e up the old group Hemo- 

 sporidia, at least not until the questionable "binucleate" forms have been 

 worked out in complete detail. 



Following Minchin, in naming the families according to the more char- 

 acteristic of the contained genera, we have the following: 



Family 1. Eimeridw (Asporocystidfe, Leger). Sporocysts absent, the sporozoites 

 being naked in the parent cell (gymnospores). 



Genus 1. Eimeria, A. Schn., 1875. (Syn., Legerella Mesnil.) With the characters 

 of the family. One species, E. no^-a, A. Schn., from the Malpighian tubules 

 of Glomeris. 



Family 2. Isosporidw (Disporocystidfe, Leger). The oosphere forms two sporo- 

 blasts each with sporocysts (chlamydospores). 



Genus 2. C'i/c/o4'poro, A. Seh., ISSl. Each sporoblast forms two sporozoites. C. 

 glomericola, A. Schn., 1881, intestine of Glomeris sp., and C. caryolytica, 

 Schaudinn, from the intestine of moles. 



Genus 3. Diplospora, Labb<;, 1893. Spores tetrazoic; many species occurring in 

 birds, snakes, lizards, and frogs. 



Genus 4. /«ospora, A. Schn., 1881. Spores poly zoic (?). I. rara, A. Schn., from the 

 black slug, Limax cinereo niger. 



Family 3. Coccidiidw, (Tetrasporocystidee, Leger). The fertilized cell produces 

 four sporoblasts with sporocysts (chlamydospores). 



Genus 5. Coccidium, Leuckart, 1879. The dizoie spores are spherical or oval. 

 Many species almost entirely limited to vertebrate hosts, and found in nearly 

 all orders. Here, also, belong some questionable forms, such as Paraeoccidium 

 prevoti, Lav. and Mes., from the frog. 



Genus 6. Crystallospora, Labbe, 1896. The spores are dizoie and the sporocysts 

 in the form of a double pyramid placed base to base. One species, Cr. crys- 

 talloides, Thel., from the intestine of IMotella tricirrata of Roscoff (Fig. 20, L). 



Family 4. Klossidis, (Polysporocystidse, Leger). The fertilized cell contains 

 many sporoblasts (chlamydospores). 



Genus 7. Barroussia, A. Schn., 188.5. Spores spherical and monozoic; sporocyst 

 smooth. Many species, a good type being B. ornata, A. Schn., from the gut of 

 Nepa cinerea (Fig. 20, C). 



Genus 8. Echinospora, Leger, 1897. Spores monozoic, oval, and with spinous 

 sporocyst. Typical species, E. labbei, Leger, from gut of Lithobius mutabilis. 



Genus 9. Diaspora, Leger, 1898. Spores, as above, but sporocysts not bivalve 

 and with micropyle at one end. I), hydatidea, Leger, from gut of Polydesmus. 



Genus 10. Addea, k.Schn.,\S75. Spores dizoie with smooth, spherical or flattened 

 sporocyst. Many species, a typical one, A. ovata, A. Sch., from gut of Litho- 

 bius. 



Genus 11. Miyichinia, Labbe, 1896. Spores dizoie, with oval sporocysts drawn 

 out into long polar filaments. M. chitonis, Lankester, 1896. 



Genus 12. Eucoccidium ("Benedenia"), Liihe, 1902. Spores trizoic, schizogony 

 absent. E. eberthi, Labbe, from Sepia. 



Genus 13. /v7os«m, A. Schn., 1875. Spores tetrazoic or polyzoic, and with spherical 

 sporocysts. 



Genus 14. Carijotropha, Siedlecki, 1902. Twenty, more or less, sporoblasts, with 

 twelve sporozoites in each. Sporocysts spherical. One species, C. mesnili, 

 Sied., from the spermatogonia of Polymnia nebulosa. 



Genus 15. KlosxicUa, Smith and .Johnson, 1902. Sporoblasts polyzoic, sporo- 

 cvsts subspherical thirty to thirty-four sporozoites. One species, Iv. muris, 

 S. and J., from the kidney of the mouse. 



