2Q5 Bulletin Jard. Bot. Bui tenzorg, Série IH , Vol. IV. Livr. 2. 



Fig. 6. A psyllid-gall on Eugenia 

 spec. X 1. 



* No. 14. Eugenia spec. 3. 



A leaf-gall caused by a psyllida. 



Same gall as the foregoing, but still 

 bigsfer, average diameter about 3 mM. The 

 excrescences on the uppersjde of the leaf-blade 

 are semi-ballshaped and yellowish-green. See 

 figure 6. 



Sebesy-island, hilltop-forest, about 700 M. 

 April 25th 1921. No. 5284. 



No. 15. Evodia spec. 



A leaf-gall caused by an acarid. 



On the undersurface of the leaf are devel- 

 oped thick velvety hair-growths which may 

 cover the whole surface of the leaf. They are 

 mostly smaller and irregular; also on the leaf- 

 stalks and young twigs they may be developed. 



Sebesy-island, hill-forest, about 300 M, April 25th 1921. No. 5319. 



No. 16 Ficus ampelas BURM. 



A leaf-gall caused by a psyllida. 



A very common gall in Java and Sumatra. On the uppersurface of 

 the leaf yellow semi-ballshaped excrescences, on the undersurface conical 

 outgrowths, with an opening in the top of the gall. 



Sebesy-island, secondary forest, April 24th 1921. No, 5230. 



Literature: 1) D. v. L. Java !. No. 6. 



2) D. V. L. Sumatra. No. 11. figure 11. 



No. 17. Ficus ampelas BURM. 



A leaf-gall caused by a gall-mite : Eriophyes ranciis Nal. 



Tiny excrescences of the leafblade, average size about 1 mM. On the 

 uppersurface tiny rounded svvellings, on the undersurface more conical with 

 an aperture in the top, which is covered with white hairlets. Common 



in Java. 



Karakatau-island, young forest, January 19th 1922. N. 5968, and ait. 

 about 300 M. January 20th 1922. N. 6013. 



Sebesy-island, Cocos-jungle. April 22nd 1921. No. 5126. Secondary 

 forest, April 24th 1921. No. 5234. 



Literature: D. v. L. III. No. 107. 



* No. 18. Ficus callosa WLLD. 



A leaf-gall caused by a thrips: Gigantoflirips elegans ZiMM. 

 No true gall, only yellow spots on the surface of the leaf slightly 

 incurvated and wrinkled. Also known from Java, but not yet described- 



