SPECIAL MORPHOLOGY AND TAXONOMY OF SARCODINA 353 



Family 5. Reticulariidae, MacBr. em. 



1. Spores brownish or umber 2 



Spores yellowish Gemis Dictydioethalium 



2. Sporangia bounded by broad perforated 



plates Genus Enteridium 



Sporangia wholly indeterminate .... Genus Reticidaria 

 Legion 4. Lycogalales MacBr. 



One genus only Genus Lycogala 



Legion 5. Trichiales MacBr. 



L Capillitium a distinct net; no spiral bands 



Family L Aecyriid.e 

 CapilHtium threads fixed or free; no net. . . 2 



2. Capillitium threads free; with spiral bands 



Family 2. Trichiid.e 

 Capillitium threads attached 3 



3. Thi'eads attached at both ends 4 



Threads attached at one end if at all 



Family 3. Perich^nid.e 



4. Threads plain or slightly roughened 



Family 4. DiANEMiDiE 

 Tlireads definitely sculptured . . . Family 5. Prototrichiid^ 

 Family 1. Arcyriidae, MacBr. em. 



1. Capillitium elastic 2 



Capillitium non-elastic Genus Lachnobolus 



2. Capillitium attached at base; no hamate 



branches Genus Arcyria 



Capillitium centrally attached, with ham- 

 ate branches Genus Heterotrichia 



Family 2. Trichlidse, MacBr. em. 



L Capillitium threads long, centrally attached 2 

 Capillitium threads short, free, sometimes 

 branched 3 



2. Sculpture spiral Genus Heviitrichia 



Sculpture reticulate Genus Calonema 



3. Threads, elaters, marked bj^ spiral bands 



Genus Trichia 

 Threads with irregular sculpture or none 



Genus Oligonema 

 Family 3. Perichsenidae, MacBr. em. 



Sporangia more or less grouped; dehiscence 



irregular Genus Ophiotheca 



Sporangia grouped, polygonal; dehiscence by 



lid Genus Perichcena 



Family 4. Dianemidae, MacBr. em. 



Capilhtium threads attached at one end only 



or free Genus Margarita 



Capillitium threads attached at each end 



Genus Dianema 

 Family 5. Prototrichiidae, MacBr. em. 



A smgle genus Genus Prototrichia 



Sub-class III. FORAMINIFERA, D'Orb. 



Doflein includes all of the testate rhizopods as a subdivision— 

 Monothalamia— of the Foraminifera. Such a system does not 

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