632 



SIR SIDNEY HARMER ON COMMEllSON S DOLPHIN 





£ II 



a> 



C. commersonii. 



Cf. Flower. 



P. Z. S. 1883, 



p. 506. 



IM ° 



s s 



Ci . 



5 ^ 



oi 



. '^. 



"S M 



1. Total length (centimetres) 



2. Rostrum, length 



3. „ width at base . . 



36-3 

 19-5 



8-3 



7-7 

 7 



1-7 

 16-8 



10-5 



6-5 



2'2 



1-7 



15-1 

 16-7 

 14-3 

 300 



13-5 

 5-8 



37 



2-2 



29-8 



14-0 



7-3 



6-5 

 5-3 



1-6 

 12-3 



10-9 



6-2 



1-6 



1-8 



12-7 

 14-6 

 13-2 

 23-0 



10-8 

 4-8 



3-3 



1-9 



29-5 



14-0 



6-5 



6-2 

 5-2 



1-6 

 12-3 



11-2 



6-0 



1-5 



1-5 



14-8 

 13-2 

 23-0 



11-0 

 4-6 



2-9 



1-7 



29-0* 



13-2 



6-8 



5-9 

 51 



1-5 

 11-6 



10-4 



5-1 



1-3 



1-8 



1-2 



12-9 



14-5* 

 13-0* 

 22-8 



11-0 

 4-3 



2-6 



1-5 



4. „ „ opposite 2nd tooth 



5. „ „ at middle 



6. „ vertical depth, at middle of 

 tooth-rovY 



7. Tooth-row, length of 



8. Maxilla, right, posterior expansion of, 

 length .... 



9. Do. do. width (middle 



of orbit to naves) 



10. Do. width at posterior end of 



tooth-row 



11. Premaxilla, right, width at posterior 



end of tooth-row ... 



12. „ „ width behind nares . . 



13. Orbital width (at front of orbit) 



14. Glenoid width 



15. Greatest height of skull 



16. Mandible, length 



17. „ condyle to posterior end of 

 tooth-row 



18. „ depth, at middle of 17 



19. „ „ at posterior end of 

 tooth-row 



20. „ „ at middle of tooth- 

 row 





Peecehtages. 

 1. Total length 



100-0 

 53-7 



21-2 

 46-3 



29-0 



17-9 



16-0 



100-0 

 47-0 



21-8 

 41-2 



36-5 



20-8 



16-1 



100-0 

 47-5 



21-0 

 41-7 



38-0 



20-4 



15-6 



100-0 

 45-5 



20-4 

 40-0 



35-9 



17-6 



14-8 



2. Rostrum, length 



4. „ width opposite 2nd tooth 

 from behind 



7. Tooth-row, length of 



8. Maxilla, right, posterior expansion, 

 length 



9. Maxilla, right, posterior expansion, 

 width 



18. Mandible, depth, middle of part behind 

 teeth 





* Estimated (skull imperfect). 



The external cliai^acters of Mr. Yallentin's Dolphin were not 

 definitely known, although he himself had no doubt that the 

 skull belonged to the species shown in his photographs. Com- 



