466 



2618. The second metacarpal of the left fin. 



2619. The third metacarpal of the right fin. 



2620. The third metacarpal of the left fin. 



2621. The fourth metacarpal of the right fin. 



2622. The fourth metacarpal of the left fin. 



2623. The fifth metacarpal of the right fin. 



2624. The fifth metacarpal of the left fin. 2625. A phalangeal bone. 



2626. An incisor tusk, from the upper jaw, of a male Malayan Dugong (Halicore 

 indicus). 



It is characterized by its obliquely-worn chisel-shaped exserted end, and by the wide and 

 deep pulp-cavity at the implanted end. 



Presented by Prof. Owen, F.E.S. 



2627. An incisor tusk, from the upper jaw, of a female Malayan Dugong (Halicore 

 indicus). 



It is characterized by the shallow pulp-cavity, with oblique tumid margins, of the im- 

 planted base, and by the obtuse unworn point at the opposite end. 



Presented by Prof. Owen, F.R.S. 



2628. A rudimental or abortive incisor tooth, from the lower jaw, of an adult male 

 Malayan Dugong (Halicore indicus). 



The crown is irregularly eaten away by the absorbent process ; its fang is closed at the 

 extremity : it was buried in the gum in one of the shallow sockets of the sloping part of the 

 symphysis of the lower jaw. 



Presented by Prof. Owen, F.E.S. 



2629. The second, third, fourth and fifth molar teeth of the upper and lower jaws 

 of a Malayan Dugong (Halicore indicus}. 



Presented by Sir Thomas Stamford Raffles, P.Z.S. 



