380 



acute. Tarsus not longer than middle toe and claw. Above, 

 streaked on the head, back, and rump, with dark brown, the bor- 

 ders of the feathers paler, but without any rufous. Beneath, 

 bluish white, the middle of the breast, with sides of throat and 

 body spotted and streaked with blackish brown. Wings above 

 nearly uniform dark brownish rufous. Under tail coverts yellow- 

 ish brown, conspicuously blotched with blackish. An ashy super- 

 ciliary stripe, becoming nearly white at the bill, and a whitish 

 maxillary one ; the crown with a faint grayish median line. 

 Length, 5 inches ; wing, 2.20 ; tail, 2.35. Hah. Petaluma, Cal. 



Prof. Jeffries Wyman gave a description of a mon- 

 strosity which he had recently dissected — a Cyclopean 



pig- 



These animals are very liable to the various forms of mon- 

 strosity, and especially to cyclopism. In such cases there is a 

 single eye in the median line of the forehead, symmetrical, with 

 a pupil in the centre, and a lid above it ; if there is any projec- 

 tion above the eye, it is a nose. He criticized the artistic repre- 

 sentations of Polyphemus, which have always made his eye either 

 a right or a left one in the median line, which of course must be 

 unsymmetrical ; every organ on the median line is always sym- 

 metrical ; hence the cyclopean eye is formed by the union of 

 parts corresponding to two eyes, either the outer or the inner 

 halves, either of which would make a symmetrical organ. In 

 cases of double monstrosity, two faces may unite to form an eye 

 with two irides, two lenses, and one globe ; in other forms the 

 globe may be subdivided wholly or in part, and in all degrees, 

 even to two slightly separated eyes. This cannot be explained 

 by an arrest of development, as maintained by some authors, who 

 state that at a certain stage of development every eye is cyclo- 

 pean, being developed from a central cerebral vesicle ; — for, we 

 find similar monstrosity in regard to the ear, and with the same 

 modifications ; so there may be a single symmetrical median in- 

 cisor tooth, as was the case in this very pig ; in like manner, the 

 body may terminate in a single leg, with one, or two partially 

 separated feet ; and a single median arm may project upwards 

 between the shoulders of a double foetus. These cases cannot be 



