270 BULLETIN JARD. BOT. BUITENZORG, SÉRIE 111, VOL. IV. LiVR. 2. 



bladders which impede the fui! development of the leaf. When the leaf is badly 

 attacked the vesicles may mass in compact bunches. See the subjoined 

 figure 3. Dr. Karny found two species of thrips in the galls: Eothrips 

 nov. spec. (vie. nervisequus) and Dolerotlirips nov. spec. (vie. picticoniis). 



Hongkong, in shady places, 8 Nov. 1920. No. 4922. 



New-Territory, Sha-Tin, in underbrush, 10 Nov. 1920. No. 4941. 



Literature: D. v. L. Java Vil. No. 359. figure 162 and 163. 



No. 4. Bischofia javanica Bl. 



A petiole-gall caused by a gallmidge. 



Small swellings of the bark of the pétiole (see figure 4) which are of a 

 light green colour, 

 when older the sur- 

 face is covered with 

 a light gray corky 

 tissue. Inside there 

 is a very narrow 

 larval-chamber, te- 

 nanted by a gall- 

 midge-larva. 



Hongkong, in a 

 thinly wooded local- 

 ity, 8 Nov. 1920. 

 No. 4936. 



Fig. 4. An itonid-gall on Bischofia javanica Bl. nat. size. 



No. 5. Breynia fruticosa HOOK. F. 

 A bud-gall caused by a gallmidge, 

 At the end of the twigs irregular roundish 



swellings devel- 



.>?S;a >âr-r-' op- Size about 6 



mm. The surface 

 is of a reddish- 

 brown colour. 

 Inside there are 

 a few small 

 larval-chambers. 

 I found only one 

 spécimen. See 

 figure 5. 



Hongkong, in a thinly wooded locality, 8 Nov. 

 1920. No. 4932. 



No. 6. Breynia fruticosa HoOK. F. 



A stem-gall caused by a moth. 



An almost similar gall is very common in 



Fig. 5. A midge-gall on Breynia 

 fruticosa HooK. F. nat. size. 



Fig. 6. A moth-gall on Brey- 

 nia fruticosa HoOK. F. X '^U- 



