A. Sharples 177 



EEFEREXCES. 



1. Brooks, F. T. A Disease of Plantation Rubber caused by Ustulina zonaia. 

 Bull. No. 22, Dept. of Agriculture, F. M. 8. and Netv Phytologist, vol. xiv, Nos. 

 4 and 5. 



2. Brooks, F. T. and Shaeples, A. Pink Disease. Bull. Xo. 21, Dept. of Agri- 

 culture F. M. S. 



3. Massee, G. Fungi Exoticii. Kew Bull. p. 2.51, 1910. 



4. Petch, T. Root Diseases of Tea. Circs, and Ag. Jour, of Roy. Bot. Gard. Ceylon, 

 vol. V, Xo. n, Oct. 1910. 



5. Petch, T. The Fungus-diseases of Hevea brasiliensis. Rubber Receuil, Inter- 

 national Rubber Congress and Exhibition, Batavia, Sep. 1914, pp. 116-129. 



6. Petch, T. Tapping of an old Hevea trea at Henaratgoda. Bull. Xo. 18, Dept. 

 of Agriculture, Ceylon, Sep. 1914. 



7. Rant, A. Ueber die Djamoer-Oepas Krankheit und ueber das Corticium 

 javanicum Zimm. Bull, dti .Jard. Bot. de Buitenzorg, 2nd ser. Xo. iv, 1912, pp. 1- 

 48. 



8. Reeves, A. T. Ustulina zonata. Art. vm, page 26, Report of Consulting Chemists 

 in London to the Rubber Growers' Association, 2 July, 1916. 



9. Shakples, a. Bark Scraping and Bark Affections. Ag. Bull. Fed. Malay States, 

 vol. m, Xo. n, Aug. 1915. 



10. Sharples, A. Ustulina zonata — a fungus affecting Hevea Brasiliensis. BuU. 

 Xo. 25, Dept of Agriculture, F.M.S. 1916. 



EXPLANATION OF PLATES. 



PLATE III. " 



Fig. 1. Typical specimen of dry collar-rot on ten year old tree caused by U. zonata. 



{\ nat. size.) 

 Fig. 2. Flat Plate Fructifications of IJ. zonata on old jungle stump left in Plantation. 



(Photograph by E. W. King, Esq.) 

 Fig. 3. T.S. of Spec. (A) (see text) attacked by U. zonata and shot-hole borer. (J nat. 



size.) 

 Fig. 4. L.S. of same showing bore-holes and black lines. (^ nat. size.) 



PLATE IV. 



Fig. 5. Photograph of scraped tree taken four days after scraping — showing latex exuding 



from bore-holes. (J nat. size.) 

 Fig. 6. Same tree with bark removed exposing outer surface of wood — note black hnes, 



etc. 

 Fig. 7. Lateral root carrying typical fructification of U. zotuita. Note white patches of 



mycehum in bark; the black hnes and zoning on the plates. (^ nat. size.) 

 Fig. 8. Hollow White-ant tree with U. zonata. The two black hnes indicate the Umits 



of the wood attacked b\' the fungus, (i nat. size.) 



