380 



MERISTIC VARIATION. 



[part I. 



Fig. 116. Specimen stated by 

 Delplanque to have been the ri^bt 

 foot of a Cow (see No. 563). (After 

 Delplanque.) 



Sheep, having four toes, each having three phalanges, 

 on each posterior limb (Fig. 117). In each case the toes 

 were arranged as two pairs, the hoofs of each pair being 

 turned towards each other. Each foot had four united 

 metatarsals, marked off from each other by grooves on the 

 surface of the bone, the division between the metatarsals 

 of each pair of toes being clearly marked at the peripheral 

 ends of the bones. In the case of each foot there were 

 parts of a pair of tarsi arranged in a symmetrical and com- 

 plementary manuer about the middle line of the limb. 

 In each tarsus there was a large bone having the structure 

 of two calcanea, a right and a left, united posteriorly ; the 

 upward prolongation, proper to the calcaneum, was present 

 on each side of this bone and projected upwards on each 

 side of the tibia. The astragalus of each foot was similarly 

 a bone double in form, uniting in itself the parts of a right 

 and left astragalus. The left foot had a single fiat bone 

 below the astragalus, representing as it were two naviculars 

 fused together ; and four bones in a distal row, representing 

 presumably two cuboids, and two cuneiform elements. In 

 the right foot also there was a single bone below the 

 astragalus, and four other bones arranged in a way slightly 

 different from that of the other foot. Ercolani, ibid., p. 

 773, Tav. n. figs. 7 and 8. 



Fig. 117. Bones of left hindjfoot of a Sheep, No. 566 [q. v.] copied from Ercolani. 

 clc, clc, the two calcanea. a + a 2 , bone representing the two astragali, n + n' 2 , 



tbe two naviculars, cb, cb, the two cuboids. 



