272 Proceedings of the Royal Physical Society. 



The optic nerve divided soon after entering the orbit 

 into two branches, which were connected with two rudi- 

 mentary eyeballs. The sclerotic and choroid of each eye 

 were distinct, but the cornea, pupil, and lens could not be 

 detected. 



The part of the pharynx lying above the level of the soft 

 palate reached as usual to the lower surface of the basi- 

 sphenoid, but anteriorly it was bounded by the united 

 palates, and there were no posterior nares. 



(1)) Cyclopean Fcettts of Pig. — For this fcetus we are in- 

 debted to Dr Munro, jun., of Katho. It was one of a large 

 litter, and was dead when found. The others were normal 

 and healthy. Its external appearance was more distinctly 

 Cyclopean than that of the human subject already described, 

 for below the proboscis there was a large and prominent 

 eyeball. The proboscis had a firm bony base projecting 

 nearly an inch beyond the frontal bone, and it terminated in 

 a movable fleshy portion, half an inch in length. The trunk 

 bent downwards over the middle of the front of the eyeball, 

 and at its free extremity there was an orifice leading into a 

 canal in its interior. The eyeball extended considerably in 

 front of the eyelids, which were small. The only indications 

 of an incomplete fusion of the two eyeballs were two slight 

 projections of the sclerotic into the cornea, one above and 

 the other below. 



The calvarium was divided, and the brain removed and 

 hardened in spirit. As is usual in these cases the parts of 

 the brain behind the origin of the third nerves were normal, 

 but the structures derived from the anterior cerebral vesicle 

 were rudimentary. Thus there was no division into hemi- 

 spheres, but only one smooth vesicle containing a single 

 cavity. 



There were no traces of the olfactory nerve, still the 

 interior of the proboscis had an appearance somewhat 

 resembling that of the nasal cavities. The anterior extremity 

 of the proboscis appeared at first sight to have two open- 

 ings, but they were not completely separated, and they lead 

 into a single cavity, which was very small, near the tip 



