88 W. M. Smallwood 
branches. The eggs are arranged in regular rows at right angles 
to the long axis of the spawn. KORSCHELT and HEIDER! estimate 
that 600000 eggs are laid by each animal. Deposition occurs from 
twelve to twenty four hours after copulation. At the time when 
the eggs are laid, they are in the metaphase of tie first maturation 
spindle. The sueceeding changes follow rapidly and within an hour 
or an hour and a half the eggs have segmented into the two and 
four celled stages. This is a great help in the study of this problem 
for a single spawn mass may show, if fixed in the metaphase of 
the first maturation spindle, all of the changes involved in the for- 
mation of the first and second polar bodies. 
In the breeding season Montagua Gouldiü are found in the hy- 
drorhizal portion of Tubularia crocea, being especially abundant in 
deteriorating colonies; usually Panopeus, Dendronotus, young My- 
tılus, and many larvae of Worms, Crustacea, ete., are found in com- 
pany with them. The spawn is small and fan-shaped, each normal 
sized mass containing about 500 eggs. After a few hours the 
mass assumes an oval form but if it is kept in stale water, the 
eggs die, the egg mass agains assuming the fan-shape with the eggs 
arranged in radiate rows. The spawn is either scattered in Tubu- 
laria or laid in nests; that is, in small spaces free from the stems 
and branches of the hydroid. In these nests from 50 to 100 masses 
of spawn are found. Each individual lays a variable number of 
egg-masses. A record of 157 animals (SmaLLwoop, ’03) showed an 
everage of 6.2 spawn-masses for each animal after being brought 
into the aquarium. Deposition oceurs about the same time after 
copulation as in D. bifida. The rate of development is slow in 
comparision with the previous species. While the maturation phe- 
nomena are well started when the eggs are laid, yet the second 
polar body is not formed until four hours have elapsed after depo- 
sition; all of the eggs in a single spawn mass are in about the 
same stage of development. A rest period of about two hours exists 
between the two and four celled segmentation stages. 
Montagua pilata were taken by dredging in Vinyard sound. 
The method of copulation is somewhat different from the two men- 
tioned above. Ample opportunity was afforded to observe the pro- 
cess which is as follows?: »The ends of the oviducts become firmly 
1 Invertebrate Embryology. Part IV. p. 102. 
2 SMALLWOOD, 03, pp. 15, 16. 
