176] 



The Classification of Lower Organisms 



Family 9. Margaritida [Margaritidae] Doflein 1909. Order Margaritaceae Lister 

 op. cit. 202. Family Dianemaceae Macbride N. Am. Slime Molds ed. 2: 237 (1922). 

 Sporangia with pale or yellow spores and a capillitium of smooth threads attached at 

 both ends. Dianema, Margarita. 



Family 10. Perichaenacea [Perichaenaceae] (Rostafinski) Lankester 1. c. Tribe 

 Perichaenaceae Rostafinski op. cit. 15. Sporangia with pale or yellow spores and a 

 capillitium of unattached smooth threads. Perichaena, Ophiotheca. 



Family 11. Arcyriacea [Arcyriaceae] (Rostafinski) Lankester 1. c. Tribe Arcyri- 

 aceae Rostafinski op. cit. 15. Order Arcyriaceae Lister op. cit. 182. Family Arcyriidae 

 Doflein 1909. Sporangia with pale or yellow spores and a reticulate capillitium, 

 usually sculptured, but not with spiral bands. Arcyria, Lachnobolus. 



Family 12. Trichiacea [Trichiaceae] (Rostafinski) Berlese in Saccardo Sylloge 7: 

 437 (1888). Tribe Trichiaceae Rostafinski op. cit. 14. Family Trichinaceae Lankes- 



Fig. 33. — Mycetozoa. a-f, Spore, germination, gametes, syngamy, and zygote of 

 Physarum polycephalum after Howard (1931) x 1,000. g-1, Stages of mitosis in the 

 Plasmodium of Physarum polycephalum after Howard ( 1932) x 2,000. m-o. Stages 

 of mitosis in the plasmodium of Trichia after Lister (1893) x 1,000. p, Cleavage 

 in the developing fruit of Physarum polycephalum after Howard (1931) x 1,000. 

 q, Capillitium and spores of Lepidoderma Chailletii x 1,000. r-W, fruits of Myce- 

 toza X 5; r, Sternonitis splcndens; s, Lycogala cpidcndrum; i, Lcocarpus fragilis; 

 U, Lepidoderma Chaillettii; v, Physarum notabile; w, Hemitrichia intorta. 



