36 A Monograph of the Myxogastves. 



but must constitute a new genus, which exactly illustrates 

 the difference between Licca and Lindhladia or Tuhdina 

 respectively ; whereas the only distinction given by Rostafinski 

 between T^ihclina and Lindhhulia amounts to saying that in the 

 former the sporangia are elongated ; in the latter, shorter. 



A well-defined hypothallus is often present, and in some 

 species, as T. stipitata, B. and C, forms an elongated, stem-like 

 stmcture which possibly consists of sterile, modified sporangia. 



Dr. Geo. A. Rex has kindly furnished me with a sequence of 

 specimens, all belonging to Tululina cylindrica as defined in the 

 present work, which to my mind show clearly the transition 

 from Tiibulina to Siplioiotychium, and thus furnishing a connect- 

 ing link between the Fcritrichcae and the Culumelliferae. 



Distrih. Europe ; North America ; India; Ceylon; Australia; 

 Bonin Island: species, 11. 



A. Sporangia, regular or plasinodiocarp. 

 Tubulina minima, Mass. 



Sporangia scattered, sessile on a broad base, hemispherical or 

 varioicsly elongated, little depressed ; wall thin, smooth ; from clear 

 to ohscure hrown; torn above into ^e,\evsl persistent, irregular teeth ; 

 mass of spores umber, spores globose, minutely warted, 10 — 12 /x 

 diameter. 



Licca minima, Fr., Syst. Myc, iii. p. 199 ; Karst., Myc. Fenn., 

 iv. p. 125; Sacc, Syll., 1385. 



Licca variabilis, Schrad., Nov. pi. gen., p. 15, t. vi., £f. 5, 6. 



Uxsicc. — Karst., Fung. Fenn., 798. 



(Specimen from Fries in Herb. Berk.) 



Britain (Bulmer, Yorks). 



On pine wood and sawdust. Germany ; Sweden ; Finland. 



An obscure species, which, from its scattered habit, is easily 

 overlooked ; when circular from "5 — 1 mm. across ; frequently 

 2 — 8 mm. when elongated. The colour varies from almost chest- 

 nut to blackish brown ; ruptured above in an irregularly stellate 

 manner. 



The inner surface of wall of sporangium has numerous 

 coloured cells or masses arranged in groups. 



