ANIMAL ANOMALIES 665 



There are cases of cleft nose in which the nostrils are in inde- 

 pendent projections. This condition is usually associated with hare- 

 lip and cleft palate. With regard to the eyes there are several 

 possible abnormalities. Cyclopia is a condition in which there is 

 a single median eye like that of the Cyclops instead of the usual 

 paired arrangement. In such cases the nose is usually at the base 

 of the forehead, above the eye, and cylindrical in shape. Failure 

 of complete development of the iris or chorioid, thus leaving a gap 

 or open sector in the margin of the pupil, is known as colohoma. 



