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1. a human fetus with synotia (nose, eyes and maxilla superior 
are existing). There is an indication of a mouth. No inferior maxilla 
is found. The ears are united in the mid-line in a single meatus 
acusticus externus (In this being the brains were unfortunately thrown 
away). 
2. a fetus of a pig with cebocephalia (Proboscis is found above 
two totally separated eyes in one orbit). 
3. a fetus of a lamb with incomplete cyclopia (one oblong eye 
with a long pupil, two optic nerves; no proboscis is visible by the 
naked eye, although the X-ray photo shows a little nasal bone at 
the os frontale). 
4. a fetus of a calf with almost complete cyclopia (one oblong 
eye with hour-glass like pupil, two optie nerves closely situated, 
no proboscis.) 
5. a fetus of a calf with incomplete cyclopia and synotia (two 
united eyes in the circle of the four eyelids, no proboscis. A mouth- 
opening, bordered at the upper part by a strong upper-jaw (X-ray 
photo). No lower jaw (X-ray photo), no tongue. The os hyoideum is 
completely developed (X-ray photo). The ears are united in the 
mid-line). 
6. a fetus of a lamb with synotia. (A small proboscis, no eyes, 
“no jaws, no mouth or tongue. There is an os hyoideum. (X-ray photo.) 
The animal therefore is anophthalmic, agnathic, aprosopic. The ears 
are united in the mid-line. Larynx and pharynx end towards the 
top in a blind sack. No thyroid gland.) 
7. a fetus of a lamb with cyclopia and synotia, dealt with in 
this communication. 
In all the brains of those monstra which were examined, there 
was found a membranous sack, which shows itself to be the roof 
of the third ventricle, much extended by fluid. Now and then 
however peculiarities were seen in this sack at its frontal or its 
occipital end. In No. 5 and No. 6 e.g. the sack was continued in 
the like-wise thin wall of the telencephalon and in N°. 7 at its distal 
end the mesencephalon and the cerebellum were not developed, 
forming a part of the thin wall of the sack covering also the IV 
ventricle. 
The sack is not only existing in the brains of cyclopian monstra, 
but also in those of the synotic type. 
In another paper I will describe more in details the differences of 
the brains in those monstra. 
Here I intend to demonstrate the monstrosity, mentioned sub N°. 7. 
It may be considered as a sample of a eyclopian malformation, with 
