. Bulletin du Jardin botanique de Buitenzorg. Plants -- Indonesia; Plants. 274 Bulletin Jard. Bot. Buitenzorg, Série lll, Vol. iV. Livr. 2. No. 17, Glochidion hongkongensc M. A. (prob). A leafgall caused by a moth. On the underside of the leaf are developed big oval swellings of a light green colour. They are more or less pointed. See figure 13. On the opposite surface of the leaf they are hardly to be seen, except only as small convexities or flat swellings which show the place of attachment of the gall. Inside there is a long narrow larval-chamber surround- ed by a thick wall. Often the leav
. Bulletin du Jardin botanique de Buitenzorg. Plants -- Indonesia; Plants. 274 Bulletin Jard. Bot. Buitenzorg, Série lll, Vol. iV. Livr. 2. No. 17, Glochidion hongkongensc M. A. (prob). A leafgall caused by a moth. On the underside of the leaf are developed big oval swellings of a light green colour. They are more or less pointed. See figure 13. On the opposite surface of the leaf they are hardly to be seen, except only as small convexities or flat swellings which show the place of attachment of the gall. Inside there is a long narrow larval-chamber surround- ed by a thick wall. Often the leaves were totally covered with the galls. New-Territory, Sha-Tin, un- derbrush. 10 Nov. 1920. No. Fig. 13. Moth-galls on Glochidion hongkongense M. A, nat. size. No. 18. Grewia microcos L. A leafgall caused by a gallmite. On the uppersurface of the leaf are developed irregularly rounded brown swellings of about 2—4 mm. in diameter. On the other side of the leaf the gall is hardly visible, only a small aperture with a low hairy wall is developed. This gall I hâve found in Singapore, Penang and Bangkok and 1 hâve described it as also occurring in Sumatra. In a thin forest on the island of Hongkong; about 150 feet above sealevel. 8 Nov. 1920. No. 4921. Literature: D. v. L. Sumatra. No. 19. fig. 19. No. 19. Hibiscus mutabilis L. A leafgall caused by a gallmite. On the upperside of the leaf are developed irregular rounded bladders size from 1 — 10 mm. They are thickly covered with long white hairs. On the underside thèse bladders are covered by a thick velvetlike erineum. Often the whole leaf may be covered by the gallbladders. They can also grow on the leaves of the calyx. Hongkong, Botanic Garden. 6 Nov. 1920. No. 4914. No. 20. Hibiscus tiliaccus L. A leafgall caused by a gallmite: Eriopliyes liibiscitileiis Nal. A gall common on tropical beaches and described from many places. Irregular, white, green or reddish bubbles on the upperside of the leaf. Thèse are also de
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