310 Bulletin Jard. Bot. Buitenzorg, Série m, Vol. IV. Livr. 2. 



No. 71. Trichosanthes tricuspidata LOUR. 



A leaf-gall caused by a gall-gnat. 



Described from Krakatau. The twigs on which this gall forms fusiform 

 swellings were stérile and so it is not quite certain if they belong to the 

 above mentioned plant or to Coccinea cordifolia COGN. 



Krakatau, April 24th 1919. No. 3527. 



Verlaten-island, April 28th 1919. No. 3756; idem April 25th 1920. No.4122. 



Sebesy, April 29th 1921. No. 5409. 



Literature: D. v. L. Krakatau, No. 21. figure 21. 



* No. 72. Uncaria sclerophylla ROXB. (prob). 

 A leaf-gall caused by an Aphida. 

 The leaves remain short and their surface is 



wrinkled and folded so as to from bunches. Mostly 



situated on the ends of the young twigs See 



figure 17. 



Verlaten-island in a ravine, about 100 M. April 



26th 1920. No. 4147. 



* No. 73. Uncaria sclerophylla RoXB. (prob). 

 A leaf-gall caused by a gall-mite. 

 On the uppersurface there are developed dark 



green yellow flat vesicles, about 3 mM. in diameter. 

 On the reverse thèse vesicles are covered with a 

 thick felt-like erineum. 



Verlaten-island in a ravine, about 100 M. April 

 26th 1920. No. 4156. 



Fig, 17. An aphid-gall on 

 Uncaria sclerophylla 

 RoxB. X 1. 



No. 74. Vernonia cinerea Less. 

 The leaf is galled by a Psyllida. 

 Described from Kratatau. Shrivelled leaves. 

 Krakatau, April 24th 1919. No. 3528. 

 Literature: D. v. L. Krakatau No. 22. fig. 22. 



* No. 75. Villcbrunnca rubcsccns Bl. 



A witches' broom formed by a gall-mite : Eriopliyes onychopus Nal. 



Very common in Java, but not yet described. The buds (often flou^er-) 

 grow out into a real thick v;^itches' broom, consisting of a great number 

 of small branches, ending in small leaflets or in proliferated and rudimen- 

 tary flowers. Often the whole gall has a reddish colour. They may become 

 very great, up to 20 cM. 



Krakatau ait. 150 M. January 20th 1922. No. 6010, and ait. 700 M- 

 January 22nd 1922. No. 6065. 



Sebesy, young forest, April 23th 1921. No. 5136, and forest in the 

 hills, about 500 M. April 25th 1921. No. 5266. 



