316 ME. P. H. GOSSE ON THE DKECIOHS CHAEACTEE OE THE EOTTFEEA. 
mastax or jaws ; no alimentary canal ; nor any distinct organization within, except a 
large red eye near the middle of the body. The whole interior, with this exception, 
appeared to be filled with a granular mass, in the midst of which, near the posterior 
region, were two or three amorphous lumps of opake substance. The foot was short ; 
the frontal cilia very large and strong, and the little animal shot to and fro with great 
swiftness (fig. 5). 
15. My next observations were made on BracMonus ampMceros. Here again I met 
with large and small eggs in individuals of the same species ; the former yl-oth of an 
inch in length, the latter gryth. As before, the larger eggs (fi^. 7) produced young 
exactly like their parent ; the smaller (fig. 6) yielded animals quite dissimilar, but agree- 
ing in all essentials with the small young of B. jpala and B. rubens. 
16. One of these latter was hatched under my eye. The httle animal (figs. 8, 9, 10) 
was several seconds in escaping, after the broad ciliated head was outside the egg-shell. 
Then it swam swiftly away, and remained traversing the hve-box with indefatigable 
perseverance all the time I looked at it. It was totally ditferent from the other young 
of the same species, and from the parent : it had no lorica, no jaws, no mastax, no 
stomach, nor any viscera, except a large mass of opake matter, apparently surrounded 
by traces of a vesicle near the hinder part. It had a red eye placed near the middle of 
the body, and an ample rotatory organ, of which the central ciha were sometimes made 
to converge, as in the parent (fig. 9). The body was wide, nearly cylindrical, gibbous 
at the posterior part, where it was abruptly attenuated to a stout cyhndrical foot (fig. 8). 
But this organ exhibited a remarkable peculiarity ; for, from behmd the foot, proceeded 
a stout cylindrical organ, truncated and ciliated at its extremity, whence a blunt point 
was sometimes protruded : this organ, from its direction and size, might easily be mis- 
taken for the foot itself, for the latter was much shorter and smaller, and projected 
almost like the thumb of a mitten, but it was readily known by its two little soft toes 
(fig. 10). The body seemed to be hollow, with thick walls, but a great number of 
bubbles hindered the transparency. Pressure did not reveal the slightest trace of jaws. 
The colour of the fore-parts was buff, like that of the parent ; but the rest was colour- 
less, except the opake mass and the red eye. I put this specimen and a newly-born 
female together, and watched them for an horn’ ; but though, in then' dewous wander- 
ings, they once or twice touched each other, no apparently voluntary communication 
took place. I left them together all night, and in the morning the female was dead. 
The male, however, was still active, and lived till the middle of the day. 
17. About the same time B. pala occurred again to my notice, and this time uith 
both male and female eggs. The observations now made may perhaps be most distinctly 
given in the words of my journal. 
12‘*45“p.m. I isolated a specimen with five small eggs attached, in two of which the em- 
bryos were vibrating the cilia (fig. 1). There was in the ovary, nearly ready for exclusion, 
another egg, similar in size and appearance to the least advanced of the five attached. 
1^ 5“. The egg last named was extruded under my eye, but took its place uith the 
