THE MVCETOZOA OF THE EAST RIDING. 207 



Arcyria punicea Pers. 



" Arcyria (probably) punicea," on rotten birch, Boynton, July 24, 

 1880, W. W. Strickland (loc. cit.). Beverley, Y.N.U. May 29,' 1S82 

 {Nat. vol. 7, p. 205). Escrick, Y.N.U. Sep. 1896 (Nat. vol. 21, p. 365). 

 Everingham, Y.N.U. Sept. 7, 1893 (Nat. vol. 19, p. 76) Hornsea, Aug - . 

 1902 ; Aug - . 8, 1904. Newton Garth, Hedon, Dec. 29, 1903 ; Aug. 10, 

 1904. Tansterne fox cover, Aug. 8, 1903. Bale Wood, Aldborough, 

 Aug. 21, 1903; Aug. 24, 1904. Enholmes, Aug. 31, 1903. Burton Con- 

 stable, Aug. 31, 1904. 



Arcyria incarnata Pers. 



Hedon, Jan. 1, 1903, &c. Birkhill Wood, Aug. 1, 1903. Thorp 

 Garth, Aldborough, Aug. 7, 1903, &c. Tansterne, Aug. 8, 1903. Roos 

 Bog, Aug. 10, 1903. Hornsea, on ash trees south of the Mere, Aug. 13, 

 1903. Bale Wood, Aldborough, Aug. 21, 1903; Aug. 24, 1904. Boreas 

 Hill, Sept. 1, 1903. Hornsea, plantations north of the Mere, Aug. S, 1904. 



Arcyria flava Pers. 



Pond Wood, Boynton, W. W. Strickland (loc. cit. ; recorded as A. 

 nutans Fr.) ; specimens from Boynton in the British Museum collection, 

 Lister, Mon. p. 190. Newton Garth near Hedon, Dec. 29, 1902. Abund- 

 ant, Bale Wood, Aug. 21, 1903. Birkhill Wood, Aug. 1, 1903 ; Jul} - 23, 

 1904. Abundant on a fir log, Dryham Plantation, North Cave, Aug. 

 29, 1903. Hedon, July 28, 1904. Hornsea, Aug. 8, 1904. Snake Hall 

 near North Cave, Aug. 27, 1904. 



Perichaena depressa Libert. 



Hedon, Dec. 26,1903 ; May 25, 1904. Lelley, Jan. 5, 1904. Hornsea, 

 plantations North of the Mere, Aug. 8, 1904. 



Perichaena populina Fries. 



Pond wood, Boynton Jan. 1880, W. W. Strickland (loc. cit., recorded 

 as P. abietina); specimens from Boynton in the British Museum Collection, 

 Lister, Mon. p. 199. Abundant, Hedon, Dec. 26, 1902, Aug. 5, 1903, &c. 

 Tansterne, Aug. 8, 1903. North Cave, Aug. 29, 1903. Swan Island, 

 Hornsea, Aug. 22, 1903. Boreas Hill, Sept. 1, 1903. Twyers near 

 Hedon, Dec. 31, 1903. Thorp Garth, Aldborough, Jan. 7, 1904. 



Perichaena variabilis Rost. 



Abundant, Hedon, Jan. 3, 1903. Aldborough, Aug. 19, 1903, sporan- 

 gium wall opaque with granular matter. Thorp Garth, Aldborough, 

 Jan. 7, 1904. Thearne, Jan. 2, 1904. Newton Garth, Dec. 24, 1903. 



