ilYCETOZOA EECORDED AS BRITISH SINCE 1909 IH 



tributed, having been recorded from the Eastern United States, from 

 Victoria and New South Wales, and from New Zealand ; it is to be 

 hoped that eventually it may be reinstated as a British species. 



H. LEiocAEPA Cooke. The single British record is a specimen 

 found on Sphagnum in an orchid house in the Eoyal Botanic Gardens, 

 Edinburgh, in 1878. In this gathering, as well as in the type from 

 Harps well, Maine, and in a specimen found by Mr. Hugo Bilgram 

 near Philadelphia in 1914, the spirals of the capillitium are all 

 dextral; on the other hand, the type of H. Varneyi Rex from 

 Kansas, which is included under K. leiocarpa in the British Museum 

 Catalogue, had sinistral spirals. How far the direction of the spirals 

 is a reliable diagnostic character is uncertain in the present state of 

 our knowledge. H. leiocarpa is closely alhed to R. clavata Rost. 



CoRis^iiviA Serpfla (Wigand) Rost. Found in abundance on 

 heaps of spent tan, at Grampound, near St. Austell, Cornwall, in 

 April and May 1906, by Mr. J. M. Coon. This is the only British 

 record. 



Arctbia ii«"8iGias Kalchbr. & Cooke. The only British gathering 

 known was made by Miss K. Higgins in woods near Luton, Beds, in 

 August 1916. 



Perich^j^a corticalis (Batch) Rost. var. liceoides Lister. 

 Found on hedge-clippings, January 1919, by Mr. N. G. Hadden, near 

 Porlock, Somerset. The minute shining yellow sporangia are both 

 clustered and scattered about the dead herbage, and closely resemble 

 those of an Oligonema, but the translucent walls are" in some 

 sporangia mottled with deposits of dark refuse-matter ; the capillitium 

 consists of a close network of nearly smooth irregular threads ; the 

 spores are minutely warted and measure 12 /it in diameter. This 

 specimen is similar in all respects to one kindly sent by Dr. Jahn 

 from Denmark ; it had developed on the dung of fallow-deer. Other 

 gatherings of this variety have been obtained on the dung of hares 

 and rabbits in Germany, on old willow-bark in Carinthia, and on old 

 cow-dung in Florida. 



P. YERMicuLARis Rost. var. pedata Lister (see Mycetozoa, ed. ^, 

 p. 253). It has been found that the specimens with stalked sporangia 

 and smooth capillitium, published under this name from Lyme Regis 

 and from Philadelphia, have far less affinity with P. vermicularis 

 than with P. chrysosperma (Currey) Lister. An extensive series of 

 gatherings of the latter species from Japan shows that the usual 

 characteristic spines on the capillitium are sometimes absent in weak 

 developments; the very faintly papillose sporangium -wall and the 

 dark stalks are not unusual features in P. chrysosperma. The variety 

 pedata of P. vermicularis should therefore be suppressed. 



In conclusion, I wish to express my sincere thanks to the friendly 

 correspondents who have given me permission to make free use of 

 their observations. 



