BELONGING TO A NEW ORDER OF THE CLASS CIRRIPEDIA. 3930 
co-extensive with this part of the animal; but whether or not 
this is really the ovarium could not be determined. It may be 
that the eggs have reached this position in some such way as 
they are supposed, by certain writers, to arrive in the pedicle of 
the pedunculate Barnacles. However, in this animal it is cer- 
tain that the ova are never arranged in lamine, at the base of 
the arms as in the other Cirripedes; but that they are hatched 
in the position in which they have just been described. Of this 
I have had ocular proof. 
In the early stages of development, the eggs are of a yellow 
ochre colour, and the yolk is round and much smaller than the 
shell; the yolk gradually assumes an elliptical form, and soon 
fills the shell, it afterwards becomes a little flattened on one side, 
and by-and-by, three processes develope themselves from this 
part ; these processes are the rudimentary arms: about this time 
a black spot, the eye, makes its appearance towards one end, and 
at the other the tail is seen to be forming; afterwards these parts 
enlarge, and gradually put on their perfect forms, while the ege 
mass assumes a full rose-colour. 
On examining an individual in which the eggs had been ex- 
posed, they were all found to be in a high state of development ; 
on applying a powerful lens, I was delighted to find that nearly 
all the little creatures were alive, and most of them struggling 
for liberty. I soon had the satisfaction to observe several dis- 
engage themselves, and launch forth into the surrounding fluid— 
free, natatory Crustaceans. In the course of a few hours nearly 
the whole were hatched, and the wine glass in which they were, 
exhibited a most animated scene. On holding it up to the light 
they were quite visible to the unassisted eye, as white points; but 
with the aid of a magnifying-glass, their motions could be accu- 
rately observed, and they were seen to resemble some of the Hn- 
tomostraca; their large single eye and general conformation 
showing their relationship to the genus Cyclops. They hung, as 
it were, suspended in the water, and every now and then dashed 
rapidly upwards with a fluttering, jerking motion. They com- 
‘menced their ascent with great abruptness, and as abruptly be- 
came quiescent again ; and, once more hanging in the water, 
