SUNIER: Marine fish-ponds of Batavia. 245 
1.02 — 1.05 m.m. 
1.03 — 1.03 m.m. 
1.04 — 1.04 m.m. 
1,04 — 1.06 m.m. 
1.05 — 1.05 m.m. 
105 — ON santa, 
1.05 — 1.08 m.m. 
1.05 — 1.08 m.m. 
1.05 — 1.10 m.m. 
1.05 — 1.10 m.m. 
1.06 — 1.10 m.m. 
1.06 — 1.10 m.m. 
1.06 — 1.10 m.m. 
The average diameter is therefore about 1.05 m.m.; the greatest being 
1.10 and the smallest 1.00 m.m.. Also about these dimensions of eggs 
of Haplochilus javanicus | would emphasise the circumstance that they 
relate to eggs spawned in brackish or salt water 
by animals grown in such water. 
In the second place the eggs of Haplochilus 
javanicus, at least after they are a couple of 
hours old, contain only one oil-globule, as may 
be seem in fig. 22 and 24 to 30. It is only 
during the first few hours after they have been 
spawned that they contain a number (some 5 to 10) 
of small oil-globules (cf. fig. 23), which however 
unite into a single globule within a few hours. 
Thirdly the egg-capsule of Haplochilus pan- 
chax bears two kinds of modified villi. In a 
certain place which evidently corresponds with the fig. 22, Eggs of Haplochilus 
place where the adhesive threads of the kepala javanicus (BLKR.) attached to 
: : > Chaefomorpha-filaments from 
timah egg display a radiate arrangement, the egg- the Batavia empangs. X 18, 
capsule of Haplochilus javanicus also bears long 
adhesive threads. Outside this place however a number of short thread- 
like more ore less hooked processes occur (see fig. 22— 30), which are 
implanted and dispersed on the rest of the zona radiata, and which should 
undoubtedly, like the adhesive threads, be regarded as modified villi. 
Higher up I already mentioned my finding the kepala timah eggs 
attached to algal filaments, especially threads of Chaetomorpha, both in the 
empangs and in the aquaria in which live kepala timah were kept. The 
eggs of Haplochilus javanicus | found under the same circumstances and 
attached in the same manner. Moreover my amanuensis, Mr, E. C. A. HERBST, 
soon after discovered how a female Haplochilus javanicus kept in a small 
aquarium with some other male and female representatives of the same 
species had a cluster of eggs hanging from the genital opening. When my 
