140 THE AMERICAN NATURALIST. [VOL. XXXIII. 
A photograph of this curious animal was taken by the author 
and is reproduced on the preceding page. 
A drawing of the pectoral girdle and fore limbs is reproduced 
below (Fig. 1). The ulna and radius of the abnormal arm are 
separate bones, not fused as they are normally; the proximal 
Fic. 1. 
end of each is attached to the humerus by intervening carti- 
lage; there are no distinct carpalia, but the metacarpals are 
joined by cartilage directly to the two long bones, and are 
grotesquely noduled at the proximal end: 1, sternum; 2, clav- 
icle of right side; 3, coracoid of right side; 4, normal coracoid 
of left side; 5, normal clavicle of left side; 6 is opposite 
abnormal coracoid ; 7, over abnormal clavicle; 8, humerus of 
abnormal arm; 9, 10, abnormal radius and ulna; 11 is over 
scapula and supra scapula of right side; 12 is the left scapula. 
The following sketch (Fig. 2) by Mr. Wetherbee, and kindly 
FIG. 2. 
loaned for this article, was made from his dissection of the 
superficial muscles of the parts in question. Both Figs. 1 and 
2 disclose peculiarities of internal structure which one would 
expect to find from a consideration of the exterior. There is, 
