442 
long and 12 mm in diameter. It is enlarged at the end where it is 
13 mm in diameter terminating in a slight protuberance, dorsal to 
which is an opening. The median eye is 23.1 mm in its horizontal 
axis and 17 mm in its vertical axis. The upper eyelid is single and 
gives no indication of having once been double. But the lower eyelid 
is double and the division occurs just beneath the middle of the eye. 
An X-ray picture 
was taken to facilitate 
the dissection and this 
revealed the absence 
of any distinctive 
orbit as well as the 
whole nasal comple- 
ment of bones. The 
upper jaw, particu- 
larly the premaxillary 
region is shortened. 
When a sagittal 
plane is passedthrough 
the naso-frontal pro- 
Fig. 2. Photograph of cyclopian pig foetus, front ae x : - 
view of head, The continuous dorsal eye-lid and single uty (proboseis), two 
pupil are evident. Made by the Photography Depart- cavities are evident: 
ment of Syracuse University. the dorsal extending 
from the end of the 
process back 20 mm 
where it is met by a 
boney floor; the ven- 
tral cavity _ ends 
blindly but extends 
farther toward the 
head, and is supported 
by a boney floor prox- 
Fig. 3. Sagittal sections of proboscis. F, frontal imally,s. Fig.3. The 
bone and boney process. Op. v. Ophthalmic branch of 2 „45 
fifth nerve. The two ophthalmic branches fuse in the two cavities are sep A 
boney process. N.S. Nasal septum of cartilage. rated by athin strip of 
cartilage which ends 
distally in two rounded knobs and proximally joins the boney floor. The 
base of the naso-frontal process is occupied by conical boney outgrowths 
that serve as a floor for the posterior portion of each cavity. A single 


