(30 GENERAL ORGANIZATION OF THE PROTOZOA 



Family 4. Didymopliyidce, Leger. The S]iorunts always associated in pairs, the 

 protomerite of the satellite disappearing, thus giving the appearance of an 

 organism with three chambers and two nuclei. 



Genus 2S. Didymophycs, Stein, 1S4S. The epiimerite has the form of a spike. 

 Cysts open by simple rupture lilDerating the oval spores. Four species. 



Family .5. Bactylophoridcc, Leger. The epimerite is asymmetrical and irregular, 

 with digitiform processes. Sporocysts open b}' simple rupture or by the 

 swelling of a residual mass of plasm termed a "pseudocyst." 



Genus 29. Rhopalonia, Leger, 1S93. The epimerite is irregular and asjTnmet- 

 rical, bearing finger-formed prolongations. The trophozoite is solitary and 

 with traces only of a protomerite. One species, R. geophili, Leger, from gut 

 of geophilus sp. 



Genus 30. Echinoinera, Labb^, 1899. The trophozoite massive and o^'al in 

 outline; epimerite persistent and spiked, the point bearing small transitory 

 digitiform processes. Cysts open by simple rupture. One species, E. hispida, 

 A. Schn., from gut of Lithobius forficatus. 



Genus 3L Tricliorhynchus, A. Schn., 1882. Protomerite truncated with an 

 elongated and conical top. Cysts with oblong, wart-like protuberances. 

 Cysts open by the swelling of laterally placed pseudocysts. Spores not in 

 strings. One species, T. pulcher, A. Schn., from the gut of Scutigera. 



Genus .32. Pterocephaliis A. Schn., 18S7. Protomerite extends beyond the deuto- 

 merite on the two sides and is divided into two lobes by a constriction; the 

 two lobes are provided with sharp papillEe, and are united on one side and 

 so curved as to form a coiled horn. The spores are oval and associated 

 oblic|uely in strings. One species, P. nobilis, A. Schn., from gut of Scolo- 

 pendra. 



Genus 33. Dadylophorus, Balb., 1889. The protomerite is dilated excentrically 

 and bears epimerite with digitiform processes. Sporonts are solitary and 

 elongated; cysts spherical and spores cylindrical; cysts open by swelling of 

 lateral pseudocj-st. One species, D. robustus, Leger, from the gut of Cryp- 

 tops hortensis. 



Family 6. Actinoccphalidce, Leger. Sporonts always solitary' with simple, sym- 

 metrical, or irregular appendages. Cysts open by simple rupture. Spores 

 biconical, cylindrical, or navicular. Parasitic usually in the gut of carnivorous 

 arthropods. 



Group A. SciadiophoriiKF, Labbe, 1899. Protomerite umbrella-shaped, and with 

 radiating ridges. Spores biconical and with central swellings, the opening 

 at the equator by simjile dehiscence, while the endospore opens terminally. 



Genus 34. SciadiopJiora, Labb^, 1899. The epimerite is large and flattened and 

 with the characteristics of the group. Three species from digestive tracts 

 of phalangidse. 



Group B. Anthorhynclnna;, Labbe, 1899. Spores ovoid with pointed ends; 

 joined in strings; equatorial opening. 



Genus 3.5. Antliorhynchus, Labbe, 1899. Epimerite in form of a large grooved 

 knob or button. One species from gut of Phalangium opilio. 



Group C. Pileocephalimr, Labbe, 1899. E]iimerite simple and regular; cysts 

 open by simple rupture; spores usually biconical. 



Genus 36. Pilcoccphaltis, A. Schn., 1875. Epimerite simple and regular and 

 somewhat lance-like. Cysts open by sim]ile rupture, spores biconical. 



Genus 37. AmjjJioroidcs, Labbe, 1899. Epimerite spiked or rounded; proto- 

 merite very short and cuji-like. Spores biconical. C)ne species, A. polydesmi, 

 Leger, from the gut of Polyilesmus. 



Genus 38. Discorinpiclat.i, Labbe, 1899. Epimerite large and discoid, with a 

 distinct rim; protomerite larger than the deutomerite, which is regularly 

 cylindrical and truncated posteriorly. Cysts spherical, spores biconical and 

 slightly lient. One species, D. truncatus, Leger, from gut of Sericostoma sp. 



