NOTKH ON my<^;ktozo\ 89 



have placed our .specimens under the genus Chondrioderina fPl. 419, 

 fig. 3 a). Ay we bave just Haid, the deposits of Hme on the sporangia 

 of fj. tif/rinnrn are normally disc-like scales, and equally distributed; 

 but we alno find sporangia in which the flat deposits are star shaped 

 (PI. 419, fig. .Sc), or tliey may be small, irregularly angled, and 

 more or less crow^led ; in the specimen from Ceylon in the Kew 

 Collecdon"' the sporangia are covered with large stellate crystals of 

 the true Didi/ininut type ; in a perfectly matured gathering made by 

 Prof. Penzig in Java, in February, 1898, the dark sporangium-wall is 

 traversed by broad, irregular white bands composed of free stellate 

 crystals, rese)nbling those in Spuniaria alhn ; while, again, the 

 purple-brown wall may b^ entirely free from deposits of lime. 

 Such an instance of variation as I have described appears to be 

 quite exceptional among the Mycetozoa, but it points to the need 

 of some modification of Rostafinski's definition of tlie genus f.cpido- 

 derma. 



Btemonitis splendens Piost. var. [i Webberi. I am indebted to 

 Rev. W. L. W. Eyre for the inspection of a specimen of this form 

 which he collected at Giengariff, Ireland, in May, 1900. A gathering 

 with precisely similar characters was made by Mr. F. W. Evens in 

 August, 1898, at KiUarney ; the only other occurrence of this 

 variety in tlie British Islands that has come to our knowledge was 

 near Falmoutii, in Marcii, 1899, recorded in a former notice (Journ. 

 Bot. 1899, 150j. These three gatherings represent the most perfect 

 form of -S'. Hplendem that we have seen from this country ; var. a 

 (jenuina has not yet, it appears, been found here. The capillitium 

 of var. /5, with slender threads and broad mesh of the superficial 

 net, takes an intermediate position between the neat structure of 

 var. a and tiie loose and incomplete capillitium of var. y jiaccida ; 

 the latter form is far from uncommon with us, and is certainly very 

 constant in its characters; but tiie flimsy, often branching columella 

 associated with broad flakes of indefinite tissue imply an imperfect 

 formation ; the spores are precisely similar in all three varieties. 

 The discovery of the vaiieuy Wehheri in the South-west of Ireland, 

 where the climate much resembles that of Cornwall, lends support 

 to the view suggested in a former paper [I.e. p. 149 ^ that the 

 perfect development of the capillitium in .S. sijlendens depends on 

 climatic conditions. 



Arcyria CErstedtii Rost. A fine gathering of this species was 

 made in the woods of Humbie, Haddingtonshire, in July, 1899. 

 It does not appear to have been before recorded from Scotland. 



Arcyria ixsignis Cooke & Kalchb. Since the account of Mr. 

 Gran's gatherings of this species in Antigua was given ^Journ. Bot. 

 1898, 121 j, with a short history of the previous records, two further 

 instances of its occurrence have come to hand. Dr. Sturgis found 

 it in some abundance and in beautiful condition at Manchester, 

 Mass., U.S.A. ; and iu November, 1900, Mr. Cran received some 



H. M. Cat. p. 106. 



