* 
A NEW ENTOZOON FROM THE EEL. 451 
movement, albeit certain outré and weird-like accomplishments. 
With a slow, steady and uniform movement, a beautiful and tiny 
structure rises up, until the truncated end is capped or surmounted 
by a pretty little pagoda, with many circlets of hooks, the distance 
from ring to ring, being uniform. It was as Fig. 119 
if a miniature tower had risen out of.a little [Ry š 
crater, and covered it with. ity base. The 
whole structure is pellucid, like old milky- 
white china. So that now the end that seemed 
to be cut across is completed by having a cone 
projected on it as a base, the apex terminating 
almost in a point. At this extremity is a lit- 
tle pore, which probably serves whatever of 
oral function is needed, hence it may be called 
its mouth. Fig. 121. The evolving of that 
° ° the 
pretty cone was not only a beautiful sight to muscular fibre. ec, triz 
$ R angular spaces, 
look at; but the method of its evolution was with parenchymatous 
a d 5 matter. f, dorsal — 
i i stis. g, Ven- 
grand thing to see into. As it rose slowly, sack, or tes oS testis, 
filled 
atous 
} tral ovary sac. 
Ìt was a lengthening truncated cone, with a (From Owen) 
crater at the upper, or smaller end. And this cone, although 
without change-at the base, kept steadily lengthening at its sides, 
and narrowing at the top, until at length the truncation, and the 
crater disappear together.— the former in a rounded point, and 
Fig. 120. the latter in a pore. Fig. 122, a, b, ¢, d. 
But how could this be done? It should be men- 
tioned that a similar extensile organ in other en- 
tozoa has been called by naturalists, from sheer 
poverty of language, the “ proboscis.” Hence 
there is no help for it; and we must use the same 
inexpressive word. ‘There is a species to which 
our specimen is allied, which is known by the name 
Echinorhyncus gigas. Its proboscis, w eh pro- 
; truded, is of a spherical form, with a neck, or stem 
reese” they in below i while at the top of the sphere is a slight 
lng z ethe “truncated projection, around which are several rows, bi 
i E rings of hooklets. In the centre of the ring that 
Surrounds the top is the oral pore. Figs. 117 and 118, a. With- 
out regarding form precisely, but rather looking to function, let 
m liken the neck of the animal to the hand of a glove, and the 
P toboscis to one of its fingers. Suppose that finger to be with- 
