12 DISSECTION OF THE CAT 



5. The Carpal Bones are the seven small bones 

 arranged in two tranverse rows below the ulna 

 and radius. 



6. The Metacarpals extend distally from the 

 carpals ; they are five in number and are consider- 

 ably elongated. 



/. The Phalanges are the bones of the toes. Each 

 toe, with the exception of the innermost ZK pollex, 

 has three phalanges. The pollex has only two. 



B. Pelvic-girdle and Hind-leg. 



i. The Pelvis is formed by the union of the two 

 innominate bones ; it forms a bony arch to which 

 the hind limbs are articulated. The long upper 

 portion of the pelvis, extending from the articula- 

 tion with the sacrum to the acetabulum, or socket 

 for the articulation of the bone of the thigh, is the 

 ilium. The upper anterior convex border of the 

 ilium is the crest. The portion of the innominate 

 bone extending backward from the acetabulum 

 and forming the upper and hinder margin of a 

 large oval opening, the obturator foramen, is the 

 ischium. The blunt process at the posterior an- 

 gle of the ischium is the tuber osity. The remain- 

 ing portion of the innominate bone, extending 

 from the acetabulum toward the mid-ventral line, 

 where it unites with its fellow of the opposite side, 

 is \\\e pubis. The line of union of the two pubes 

 is the symphysis pubis. (Plate I., Q.) 



