326 FETCH : 



Physarum crateriforme me practically confined to the dead 

 patches of bark on livmg jak trunks. 



In the following list I have not attempted to draw up 

 complete descriptions of all the species, but have noted chiefly 

 departures from the normal which occur in the Ceylon forms. 

 The nomenclature followed is that of the " Synopsis of the 

 Orders, Genera, and Species of the Mycetozoa," A. & G. 

 Lister, Jour. Bot., Vol. 45 ; the application of the Vienna rules 

 will necessitate several obvious changes, but I have preferred 

 not to anticipate more authoritative work which is already in 

 the press. The synonyms given represent merely the names 

 which have been bestowed upon Ceylon specimens ; many of 

 them are not synonyms but only errors. I owe more than I 

 can express to the late Mr. Ai'thur Lister, who generously gave 

 me the benefit of his exceptional knowledge of this group and 

 examined nearly all the gatherings enumerated ; and my 

 thanks are also due to Miss G. Lister for the same invaluable 

 assistance. 



SUB-CLASS L— EXOSPOREiE. 



Order I. — Ceratiomyxace.e. 

 Ceratiomyxa mucida, Schroet. 



Ceratium hydnoides, Alb. & Schw, in B. & Br. Fungi of 

 Ceylon, No. 875. 



o< genuina : branches of sporophores short, free. 



/3 flexuosa : sporophores much branched, stout, and erect, 

 or thin and flexuose, not anastomosing. Ceratium arhuscula, 

 B, & Br., in Fungi of Ceylon, No. 874. Ceratium ftliforme, 

 B. & Br., in Fungi of Ceylon, No. 876. 



The Peradeniya herbarium specimen of Ceratium arhuscula, 

 B. & Br., consists of crowded sporophores, 2-5-5 mm. high, 

 simple at the base, but soon dividing above into a tree-like 

 structure with numerous branches which form a somewhat 

 rounded head : the branches are somewhat interlaced, but do 

 not anastomose. The specimen of Ceratium filiforme, B. & Br., 

 consists of branched sporophores of the same type, but with 



