Reproduction of Deep-sea Fishes. 175 
the embryo, the yolk was translucent, somewhat granular, 
ef a yellowish colour, and appeared to contain some small 
oil-globules, though this was difficult to determine owing to 
the movement of the ship. The embryo did not appear to be 
alive, as no movement of the body or heart, which might 
have been expected at this stage of development, was observed. 
They were kept on board in fresh sea-water till it was 
obvious that they were dead, and were then preserved in 
formalin. The diameter of the cluster of eggs (about fifty 
in number) was about 10 mm., the diameter of each being 
2°29 mm. ; they were slightly oval in outline. 
(2) Malacocephalus levis (a Macrurid) was found not 
infrequently, and a specimen procured on the 4th of August, 
lat. 29° 43’ 35” S., long. 31° 49’ 35” E., from a depth 
of 350 fathoms, proved to be a mature female, The eggs 
were numerous, and when placed in water floated very 
readily. The yolk was clear, homogeneous, and contained 
one oil-globule. Over the surface of the egg-membrane 
could readily be seen a fine network, as in the two species of 
Macrurus. The diameter of the egg was very constant, 
being 1:31 mm., the diameter of the oil-globule 0:2 mm. 
The diameter of this egg, therefore, is about the same as that 
of M. parallelus, but the oil-globule is smaller. 
(3) The eggs of Bathygadus sp. were procured from a 
large female, taken at a depth of 540 fathoms on the East 
Coast, lat. 30° 6’ 50” S., long. 31° 38’ 30’ E. They were 
clear and homogeneous, and floated freely when placed in 
water. They measured from 1 to 1:07 mm. in diameter, and 
the single oil-globule had a diameter of 0°31 to 0°33 mm. 
(4) Some large specimens of Allocyttus (Cyttosoma) verru- 
cosus were procured in the same haul, and one of them proved 
to be a mature female with ripe eggs. When placed in sea- 
water these eggs floated very freely. They were well charac- 
terized by their single large oil-globule, 0°65 mm. in diameter, 
which is about a third of the total diameter (1°87 mm.) of 
the egg. 
(5) A large specimen of Cauliodus sloanet from a depth of 
420 fathoms (lat. 29° 49’S., long. 31° 46’ E. approx.) had 
well-developed eggs. The fish was very much broken up, 
and the eggs were only observed after it had been placed in 
preservative. The largest were 1°86 mm. in diameter; they 
had no oil-globule and there was a perivitelline space. The 
