416 Deep-sea Trawling off the S.W. Coast of Ireland : 
broader anterior portion con- 
taining the body of the em- 
bryo, and gradually tapering 
into a styliform posterior 
portion for the reception of 
the tail. The anterior por- 
tion is of an elongate ovate 
shape, a little broader in its 
dorso-ventral* diameter than 
in the transverse. Ante- 
riorly the capsule is flat- 
tened and truncate, open in 
front as well as on the sides, 
but the two flaps fitting 
closely into each other, so 
that nothing but water is 
admitted. The styliform 
portion is provided with four 
narrow ridges, of which the 
strongest is that of the right 
side, extending nearly from 
one end of the capsule to 
the other, whilst the corre- 
sponding ridge of the left 
side disappears on the broad 
portion of the capsule. The 
dorsal and ventral ridges 
are much thinner, fragile, 
and show a rayed structure, 
The outer surface of the 
capsule is perfectly smooth. 
The discovery of this egg- 
capsule has enabled me also 
to determine a similar object 
from Japan which has been 
in my possession for several 
years. In shape it agrees 
entirely with the Atlantic 
form, but it is considerably 
larger, measuring 9 inches, 
and has its surface finely 
ribbed longitudinally and 
* This term is used in relation 
to the position of the embryo 
within the capsule, which, on 
opening the broad face of the egg 
in Callorhynchus as well as in 
Chimera, is found to lie on its 
side. 
Swe 
== 
SS 
ESS 
a and 4, transverse sections at the 
places indicated by a cross (x), 
