26 SPECIMENS OF CETACEA. 



25. Carpus, dried section of palmar half of right, showing three 



ossicles in the cartilage, the cartilaginous epiphyses of 

 radius and ulna, also of the carpal ends of metacarpals. 

 From a male Greenland Right Whale 35 feet Ion or. 



26. Carpus. Dried section of dorsal half of the same carpus, 



with the three ossicles. 



27. Carpus, dried section of left, from female Right Whale 



48 feet long. Two large ossified carpals, also two 

 unossified. Radial and ulnar carpal epiphyses. Dried 

 cartilaginous ends of metacarpals. 



28. Right pelvic bone and rudimentary femur ankylosed to 



each other; the corresponding left bones and the 

 cartilaginous tibiae are modelled in wood. 



29. Left pelvic bone and femur ; the corresponding right 



bones and both cartilaginous tibiae are modelled in 

 wood. 



30. Tibia, longitudinal section through the cartilaginous, of 



a Mysticete. The cartilage is invested by a thick 

 perichondrium, and shows vacuities which probably 

 contained blood-vessels. The surface of articulation 

 for the femur is at the upper end. 



31. Tongue, the anterior end, from the foetal B. mysticetus 



(No. 3), showing the fixing of the tip to the floor of 

 the mouth by a relatively thick fraenum. Mucous 

 membrane of dorsum smooth, whilst the sides are 

 furrowed. The tongue weighed 9 oz., the fcetus itself 

 71 lb. Knox Collection, No. 70. 



32. Tongue. Transverse section through the middle of the 



tongue of the same foetus. The mucous surface of 

 dorsum is smooth ; that of the sides is raised in folds. 



Knox Collection ? 



33. Stomach of foetal B. mysticehts, showing three distinct 



compartments, oesophageal, intermediate, and pyloric. 

 The last communicates with the duodenum, into which 

 the biliary and pancreatic ducts open. 



Knox Collection, No. 61. 



34. Heart of fcetal B. mydicehis, with pulmonary artery, its 



two branches, and the aorta. The ventricles have been 

 opened into, and the auriculo-ventricular valves are 

 displayed. The ductus arteriosus, the brachio-cephalic 

 and left carotid arteries are exposed. The heart is 

 short, broad, flattened, and without a distinct apex. 



Knox Collection, No. 64. 



