DOCTERS VAN Leeuwen : Galls of Krakatau and Sebesy. 31 1 



* No. 76. Villcbrun- 

 nca rubescens BL. 



A leaf-gall caused by 

 a gall-gnat. 



This gall has not 

 yet beeti described by 

 me, but it resembles a 

 gall found in Java and 

 described. Thèse galls 

 are ball-sliaped excres- 

 cences of the mid-rib 

 and the strong off-shoots 

 covered with long, vvhite 

 hairs, average size with- 

 out hairs about 2 mM. 

 With hairs more than 4 

 mM. See accompanying 

 figure 18. 



Sebesy, forest in the 

 hills, about 400 M. April 

 25th 1921. No. 5321. 



Litcrature: D.v. L.Java 

 VIIÎ. No. 687. figure 687. F'g- 18. A midge-gall on ViUebrunnea rubescens Bl.X 1. 



No. 77. Vitcx pubcscens VahL. 



A leaf-gall formed by a gall-mite : Eriophyes cryptofrichus Nal. 

 Common on Java and other tropical malayan countries. Small vesicles 

 on the uppersurface of the leaf, with an erineum on the reverse. 

 Sebesy, young forest, April 23th 1921. No. 5179. 



Literature: D. v. L. VI. No. 342. figure 153. 



* No. 78. Vitcx Sebcsiae H. J. LAM. 



A leaf-gall caused by a gall-mite. 



This plant is new to science. The description exists in manuscript by 

 Dr. H. J. LAM. Small mostly circular or oval patches of a granular 

 appearance on the undersurface of the leaves. On the uppersurface is only 

 developed a slight concavity. 



Sebesy, April 28th 1921. No. 5355. 



* No. 79. Vitis trifolia L. 



A twig-gall caused by a gall-midge. 



A new gall. It is a slight fusiform swelling of the young ends of the 



