67 
With the description of this latter gall there is an illustra- 
tion of a section. 
Island of Krakatau, near the summit of Mount Rakata, alti- 
tude abt. 2500 ft. : 
Herb. N°. 3690, April 26th 1919. 
Literature: 1) Beitrag VII. Bull. Jard. Bot. Buitenzorg. Série H, N°. XV, 
4914. N°. p. 24. 
2) Beitrag VIII. Idem. Série I. Vol. 1, 1919. N°. 582. p. 44. 
3) RueBsAAMEN. Gallen aus Afrika und Asien. Marcellia. Vol. X, 
4911. N°. 40; figure 40; p. 129 
4) Beitrag VII. Bull. Tard: Bot. Buitenzorg. Série I, N°. XV, 
1914, N°, 454 and 455; figure 208; p- 40. 
*N°. 4. Ficus ribes Reinw. 
A bark-gall, probably caused by a gall-gnat. 
The galls I found had all matured and 
disclosed, so that I am unable to give a 
complete description. This growth is not 
known to me, either from Java or Sumatra. 
Closely pressed together (vide fig. 5) the 
stems show darkbrown oval-shaped or semi- 
globular swellings, slightly flattened where 
they meet. They are about 1'/, mM. broad 
and 1 mM. high. They are bark-growths, 
the ligneous cylinder remaining unchanged 
at the centre of the stem. At the apex of 
the gall there is a shallow depression, con- 
taining here and there some remains of the 
gall-producer. 
It looks as if this depression were a part 
of the gall-cavity, the upper-half having 
dropped when the gall matured. 
Island of Krakatau, altitude abt. 1000 feet, | | 
in the wild forest of the ravines. | i 
‘Herb. N°. 3648, April 26th 1919. Fig. 5. Ficus ribes Reinw. 
