THE MYCETOZOA OF THE EAST RIDING. 201 



Chondriodenna michelii Rost. 



Boynton, Yorks. (Lister, Mon. p. 79 ; Brit. Mus. Coll. 11 12). A few 

 s P°™ n S ia °n moss, Hornsea, plantation north of the Mere, Aug-. 8, 1004 



W. W. Strickland (loc. cit.) does not record this species from Boynton 

 but gives 'Dtderma cyanescens Fr., which is a synonym of Chondrioderma 

 mveum Rost. No Boynton specimens of the latter are included in the 

 British Museum Collection. 



Chrondrioderma radiatum Rost. 



North Wood, Boynton, Jan., 18S0 (W. W. Strickland (loc. cit.), 

 recorded as Dtderma umbilicatum P. ; specimens from Boynton in the 

 British Museum Collection (Lister, Mon. p. 85). In a dead fence, Hedon 

 Jan. 1, 1903. 



DIDYMIACE^E. 



Didymium difforme Dubv. 



On dead thistles, Hospitals, Hedon, April 10, 1903. On poplar 

 and hawthorn leaves, Hedon, Jan. 1, 1903. Stick heaps, Hedon? Dec" 

 26, 1903; April ,, ,904, &c. Thorp Garth, Aldborough, Au~ 7 

 1903, &c. Withemsea, on branches, on sand near the beach Au- ->6 

 1903. Boreas Hill Sept. ., 1903. Hedon, drain bank, in heaps of 

 dead grass, Dec 28, ,903. Thearne, Jan. 2, 1904. Newton Garth, 

 on old straw. May 27, ,904. Bale Wood, Aldborough, Aug. 24 

 1904- Pond Wood, Boynton, Feb. 29, ,88o, W. W. Strickland (loc 

 cit. recorded as Physarum album, Fr.). 



Didymium clavus Rost. 



,,i hear ^' ° n dead &rass and leaves, Jan. 2, 1904. Bale Wood, 

 Aldborough, Aug. 24, 1904. Kelsey Hill, Sept. 1, 1904. 



Didymium nigripes Fries. 



Pond Wood Boynton, Feb. 8, ,880 (W. W. Strickland, loc. cit ). 

 r orm with lobed sporangia, on oak leaves, Bale Wood, Aldboroueh, Aue 

 f.Vffi 3 * .Hedon drain bank) in heaps of dead Dec » 5- 



,™ allf °r a ' f Hedoi \ De £ 3'. 1903. Stick heaps, Hedon, Dec. 2I 

 1903. Newton Garth, May 27, ,904. Hornsea, Aug. 8, ,904 

 Kelsey Hill, Sept. 1, 1904. s y 4 



Didymium effusum Link. 



Filey, first ravine south, Y.N.U., June 1, 1903 (Nat vol ->S 

 p. 250). Thin plasmodiocarps, Hedon, Aug. c, 190^. Thorp Garth' 

 Aldborough, on dead thistles, Aug. 7 , : 9 oV Kelsey H^rf* 

 1904- Hornsea, plantat.on north of the Mere, May 28, 1904 ; Aug' 



