462 BIOLOGY OF THE PROTOZOA 



Family 3. Vampyrellidae Doflein. 



Form changeable; colorless; ray-like pseudo- 

 podia Genus A uclearia Cienkowsky 



Body branched; naked; pseudopodia delicate 



Genus Arachnula Cienkowsky 

 Color reddish; ectoparasitic on Algae. .Genus Vampyrella Cienkowsky 



Color greenish; cysts of cellulose Genus Chlamydomyxa Archer 



Body sharply pointed at base of pseudopodia 



Genus Biomyxa Leidy 

 Protoplasm of body and pseudopodia yellow 



Genus Rhizoplasma Verworn 

 Body yellow; pseudopodia colorless. . .Genus Dicitomyxa Monticelli 



Sub-class II. MYCETOZOA de Bary. 



Pseudoplasmodium in some; no peridia nor 

 capillitia; sporangium a mere mass of 



spores Order 1 . Acrasida 



Parasitic; no peridia nor capillitia. . .Order 2. Phytomyxida 

 Plasmodia; peridia and capillitia. . . Order 3. Euplasmodida 



Order I. Acrasida van Tieghem. 



Amebae solitary; stalked spore-case 



Family 1. Sappiniidae 

 Amebae grouped ; sori from group . Family 2. Guttulinidae 

 Amebae grouped; stalks of sori hardened 



amebae Family 3. Dictyostelidae 



Family 1. Sappiniidae Uangeard. 

 One genus and species; dung of horse, cow, 



dog, etc Genus Sappinia 



Family 2. Guttulinidae Cienk. 



Cells do not form stalks of sori Genus Copromyxa 



Short stalks bearing sori Genus Guttulina 



Family 3. Dictyostelidae Rostafinsky. 



1. Stalks unbranched 2 



Stalks branched Genus Polyspondylium 



2. Spores without definite arrangement 



Genus Dictyostelium 

 Spores in row like string of beads Genus Acrasis 



Order II. Phytomyxida. 



1 . Tissue parasites of plants 2 



Celozoic parasites of animals 6 



2. Tumor-causing parasites 3 



Tumors not caused Genus Ligniera Maire and Tison 



3. Cause of "club root" in cabbage family 



Genus Plasmodiophora Woronin 

 Causing gall-like tumors 4 



4. Spores in groups of four Genus Telramyxa Goebel 



Spores massed in balls or plates 5 



5. Spores massed as hollow balls Genus Sorosphaera Schroter 



Spores in spongy masses Genus Sporospora Brunch 



(i. Plasmodium forming in intestine of beetle 



Genus Mycetosporidium 



Leger and Hesse 

 Parasites of fat body and gonads or free in 

 cavity Genus Sporomyxa Leger 



