DOCTERS VAN Leeuwen : Galls of Krâkataii and Sebesy. 309 



No. 66. Premna integrifolia L. 



A leaf-gall formed by a gall-mite: £'/7(7/?//F^s preni- 



nae Nal. 



Common in Java. Very small nodules on the 

 upperside of the leafblade, about ^/4 mM. in diameter. 

 See figure 16. On the undersurface is only developed 

 a tiny yellow spot with a narrow opening. 



Krakatau, onthebeachjanuary IQth 1922. No. 5969. 



Sebesy, on the beach, April 23th 1921. No. 5198; 

 idem January[25th 1922. No. 6138. 



Literature: D. V. L. III. No. 137. 



No. 67. Ruellia repcns BURM. 



A leaf-gall caused hy 2ig3\\-m\iQ: Eriophyes stereo- "^'f^rèmn^ integ"rffolia°" 

 thrix NAL. L. X 1. 



Common in Java and Celebes. Small elongated 

 often purple-coloured vesicles on the uppersurface of the leaf. On the 

 reverse the wall is covered with a dense white erineum. This erineum 

 consists of multicellular branched hairlets. 



Sebesy, arable land, April 28th 1921. No. 5376. 



Literature: 1) D. v. L. Java II. No. 81. figure 45. 

 2) D. V. L. Celebes. No. 54. figure 54. 



No. 68. Terminalia Catappa L. 



A leaf-gall caused by a gall-mite. 



Already described from Krakatau. Small nodules on the uppersurface 

 of the leaf. 



Krakatau, April 24th 1919. No. 3505. 



Literature: D. v. L. Krakatau. No. 18. fig. 18. 



No. 69, Terminalia Catappa L. 



A leaf-gall caused by a gall-gnat. 



Described from Krakatau, tiny cylindrical outgrowths mostly situated 

 near the margin of the leaf. 



Krakatau, April 24th 1919. No. 3506. 

 Sebesy, January 25th 1922. No. 6139. 

 Literature: D. v. L. Krakatau, No, 19. figure 19. 



No. 70, Thespesia populnea SOLAND. 



A leaf-gall caused by a psyllida. 



Described from Krakatau. Rollings of the leaf margins of a yellow colour. 



Krakatau, January 19th 1922. No. 5972. 



Verlaten-island, April 29th 1919. No. 3767, and April 23th 1920. No. 4086. 



Sebesy, January 25th 1922. No. 6133, and January 26th 1922. No. 6169. 



Literature: D. v. L. Krakatau. No, 20, figure 20. 



