303 Bulletin Jard. Bot. Buit£nzqrq, Série 111, Vol. iV. Lwr. 2. 



Krakatau, Th. Valeton coll. March Ist 1905; C. A. Backer coll. 

 April 1906; by me April 24th 191Q. No. 3542 ;January 24th 1922, No. 6122 ; 

 January 25th 1922. No. 6132. 



Verlaten-island, C. A. BACKER coll. April 1906; by me April 27th 

 1919. No. 3924 b; idem April 22nd 1920. No. 4051. 



Sebesy, Cocos-jungle, April 22nd 1921. No. 5086; idem April 28th 

 1922. No. 5381. 



Literature: D. v, L. Krakatau No. 14. figure 14. 



No. 62. Pithecolobium umbellatum Bth. 



A leaf-gall caused by a gall-mite. 



Already kiiown from Krakatau. Small vesicles on the uppersurface of 

 the leaf. 



Krakatau, April 24th 1919. No. 3510; idem April 27th 1919. No. 3722a. 

 Verlaten-island, April 23th 1920. No. 4083. 

 Literature: D. v. L. Krakatau, No. 15. figure 15. 



No. 63. Pithecolobium umbellatum Bth. 

 A leaf-gall caused by a gall-mite. 



Already described from Krakatau ; discoid swellings bulging on both 

 sides of the leaf. 



Krakatau, April 24th 1919. No. 3511. 

 Literature: D. v. L, Krakatau, No, 16. figure 16. 



No. 64. Pongamia pinnata Merr. 



A leaf-gall caused by a gall-mite. 



On the upper, or on the undersurface of the leaf are developed cy- 

 lindrical, mostly club-shaped outgrowths, 5-12 mM. long, The base is 

 mostly narrow about ^/4 mM. across ; the end is swollen into an irregular 

 club, 3—5 mM. across. 



On the other side of the leaf-blade there is only a small orifice giving 

 entrance to the gall-cavity, inside the wall of the gall is covered vvith 

 long white hairîets. 



Sebesy, beach, January 25th 1922. No. 6134. 



Literature: D. v. L. Java V. No. 239. figure 97. 



No. 65. Premna integrifolia L. 



A leaf-gall caused by a gall-mite. 



Already described from Krakatau. Cudgel-shaped excrescences on the 

 uppersurface of the leaf. 



Krakatau, April 24th 1919. No. 3509. 



Verlaten- island, April 23th 1920. No. 4087; idem April 26th 1920. 

 No. 4143. 



Sebesy, April 23th 1921. No. 5200, idem April 24th 1921. No. 5238. 



Literature: D. v. L. Krakatau No. 17. figure 17. 



