Dr. A. Philippi’s Zoological Notices. 93 
making the direct observation, that in effect Zoé is nothing 
more than the first stage of Pagurus. 
On the 13th of March of this year, I found in Palermo, in a 
basin in which I kept several sea animals, to my great joy, 
about a dozen individuals of Zoé, but unfortunately already all 
dead. I hastened to examine them under the microscope as 
well as possible. The next morning I found to my great sur- 
prise the same basin, in which I had the previous day fished 
out with great trouble a dozen Zoé, quite filled with several 
hundred Zoé. I had among other animals in the basin a Pa- 
gurus hungarus, Herbst., which sat in a Natica millepuncta : 
I immediately conceived the suspicion that the Zoé must be 
its young, broke carefully the Natica, and found, in fact, the 
ovary of the Pagurus nearly quite empty, while in the remain- 
ing ova I distinctly recognised the little Zoé. I freed it with 
some trouble from the tunics (EKihauten of the ovum). These 
small Zoé were perfectly transparent, with black eyes, a red spot 
in the medial line immediately behind the eyes, and at times 
with a second red stripe before the anus. These red spots are 
evidently in the intestinal canal, and are remains of the yelk. 
The cephalothorax occupies two-fifths of the length of the ani- 
mal, and is prolongated in front into an apparently horizontal 
beak, posteriorly rounded, behind the eyes slightly con- 
stricted. The neighbourhood of the eyes projects vesicularly. 
The abdomen is not quite twice as long and five-articulated. 
The four first segments are cylindrical and gradually increase 
in length ; the last has the form of a fan, and bears twelve ra- 
diately-placed spines, of which the outer ones are the short- 
est. The eyes are sessile, very large, black, reticulately lat- 
ticed. The exterior antenne are biramificate, and originate 
on the under side; their common petiole scarcely projects 
to the margin of the cephalothorax ; the outer branch is 
retty broad, terminates exteriorly with a spine, and bears at 
its apex a number of bristles: the inner branch is shorter, 
much narrower, and bears only two bristles. Between the 
two ramifications there is another short semifalcate, slightly 
ciliated member. The inner antenne are as long as the outer 
ones, narrow, biarticulated, and terminate with two bristles. 
Of all the other organs I only recognised the two perfectly si- 
milar pair of feet, which are biramificate, and recall to mind 
Cyclops. 'The outer branch is triarticulated, the inner some- 
what stronger one quadriarticulated. The ‘terminal joint is 
in both short and acute, and furnished with long bristles. 
All the longer bristles of the feet, as well as those of the an- 
tennee, are ciliated. 
Fig 7. Zoé, the young of Pagurus hungarus, Herbst, very highly magnified. 
Fig. 8. The same, still in the egg, likewise very highly magnified. 
