180 ENDOstoREj:. [hemitrichia. 



Plate LXVI., A. — a. plasmodiocarp, x 20 ; i. oapillitium, x 600 ; e. spore, 

 X 600 (Scotland). 



Hah. On dead wood. — In hothouse, Glasgow (Edinburgh Herb.) ; 

 Germany and Poland (Strassb. Herb.) ; Bombay (B. M. 797) ; Ceylon 

 (B. M. 802); New Zealand (K. 1.31); Philadelphia (L:B.M.150) ; 

 Iowa (B. M. 832) ; S. Carolina (B. M. 801) ; St. Vincent (K. 133) ; 

 French Guiana (Paris Herb.). 



8. H. chrysospora Lister. Plasmodium ? Sporangia sub- 

 globose, sessile, crowded or scattered, 0'5 to 1 mm. diam., glossy, 

 bright yellow ; sporangium-wall membranous, with minute 

 thickenings in the form of a broken irregular reticulation. 

 Oapillitium a network of branching, yellow threads, 5 ji. diam., 

 with four to five narrow bands arranged in a close, regular spiral, 

 and connected by longitudinal strise ; the threads provided with 

 many shortly pointed free ends, and attached to various parts of 

 the sporangium-wall. Spores yellow, reticulated with narrow, 

 sharply defined bands, forming a regular net with six to nine 

 meshes to the hemisphere, 16 to 18 yu, diam. ; border 1'5 to 2 /* 

 broad. — Hemiarcyria chrysospora Lister, in Grev., xv., p. 126 

 (1887) ; Mass., in Journ. R. Micr. Soc. (1889), p. 357. Arcyria 

 chrysospot-a Mass., Mon., p. 164. 



Plate LXV., B. — a. sporangia, x 20 ; J. capillitium, x 600; o. spore 

 y. 600 (England). 



This species was first found on fallen twigs and moss in a larch 

 plantation near Lyme Begis, November 1886. A small gathering was 

 obtained in another larch plantation near the same place in November 

 1890, agreeing in all respects with the above, except that the capillitium 

 consisted of long free elaters. 



Hah. On dead twigs. — Lyme Eegis, Dorset (L:B.M.151). 



SPECIES EBFEEEED TO HeuIABOYBIA, NOT MET WITH IN THE 

 QUOTED COLLECTIONS. 



9. H. calyculata Speg., in Annal. Soc. Oient. Argent., x., 

 p. 152 (1380). Sporangia simple, gregarious, stipitate, globose 

 or ellipsoid, 1 to 2 mm. diam., dull fulvous-brown. Stalk 2 to 5 

 mm. long, 0'2 to 025 mm. thick, terete, glabrous, firm, expanded 

 above into a cup which is half the height of the sporangium, 

 the base expanded, fibrUlose, concolorous. Oapillitium and spores 

 duU yellow ; elaters 7 to 8 /x, thick, branches few, with pointed 

 free ends, cylindrical ; spiral bands three to five, even, somewhat 

 inconspicuous, with interspaces of equal width, spinulose. Spores 

 discoid-lenticular, margin muricate, 10 x 3 /x,. 



Hah. On dead willow. — Argentine Republic. 



This description suggests a form of Hemitrichia clavata. 



10. H. melanopeziza Speg., I.e., xii., p. 257 (1881). Sporangia 

 sessile, creeping, subterete, usually forming rings, 1 to 2 mm. 



