302 Bulletin Jard. Bot. Buitenzorg, Série m, Vol. iV. Li vr. 2. 



No. 39. Litsca Noronhae BL. 



A leaf-gall caused by a gall-mite. 



On the uppersurface of the leaves are developed big flat vesicles of 

 a dark-green colour. On the opposite surface the coiicavity is covered 

 by a dense white or reddish erineum. This consists of long muHicellular 

 but unbranched hairlets growing criss cross. Already known and described 

 from Java. 



Sebesy, forest of the hill-top about 700 M. April 25th. 1921 . No. 5282. 



Literature: D. v. L. VIH. No. 617. 



No. 40 Macaranga Tanarius L. 



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



A common gall in thèse countries and described from Krakatau. In my 

 former publication the name of the gall-former was given as Eriophyes 

 dactilonyx Nal. Nalepa who has studied newly sent material found this 

 mite to be an inquiline, E. macarangae being the true gall-former. This 

 will be published in a paper by Professor NALEPA, Eriophyidus aus Java, 

 lllter Beitrag, which is to be printed in the periodical Treubia, Volume II. 



Krakatau, April 24th 1919, No. 3508 and No. 3597. 



Verlaten-island, October 6th 1919. No. 3833; idem casuary-forest, 

 April 25th 1920 No. 4138; idem, grass-jungles in the hills about 150 M, 

 April 26th No. 4162. 



Sebesy, April 22nd. No. 5155, idem April 24th 1921, No. 5239. 



Literature : D. v. L, Krakatau. No. 7. figure 9. 



No. 41. Macaranga Tanarius L. 



A leaf-gall caused by a gall-mite. 



On the uppersurface of the leaf are developed cylindric or conical 

 excrescences which are slightly pubescent. They are easily recognizable by 

 their yellow colour. On the reverse exists a wide aperture giving entrance 

 to the vesicle. The wall thereof is covered with a very thin erineum. Common 

 in java. 



Krakatau, about 100 M. January 20th 1922. No. 6007. 



Sebesy, border of the forest, April 24th 1921, No. 5231. 



Literature : D. v. L, VllI. No. 450. 



No. 42. Mallotus ricinoidcs M. Arq. 



A leaf-gall caused by a gall-midge. 



The same gall occurs also in Java and has been erroneously described 

 under the name Mallotus resinosa MUELL. Arq. On the undersurface 

 of the leaf are developed almost ball-shaped excrescences. The surface 



