xvhich lived more than six years at Canonmills. 301 



siren having died without any other apparent cause than the ex- 

 siccation of the extreme fimbriae or fringes, that is, the true gillsi 

 The Siren, therefore, came into my possession in June 1825, 

 and lived till October 1831, or for the space of six years and 

 four months. During that long period, no structural change 

 took place, nor was the slightest tendency to any such change 

 discernible. The animal had evidently increased in size. When 

 it arrived it was '' nearly a foot and a half long," (Edin. New 

 Phil. Journ. vol. iv. p. 349). AVhen it died, it was fully twenty 

 inches in length ; and it had also perceptibly increased in gross- 

 ncss. It may therefore, I think, be pretty confidently conclud- 

 ed, that it is no larva, though Pallas and De Lacepede consider- 

 ed it in that light ; but a perfect animal, according to the view 

 early adopted by Linnaius, and now sanctioned by Cuvier* 



Canonmills, \ 

 \ 4th December 1«31. J 



On the Fossil Bones of Wellington Valley^ Neio Holland, tyf' 

 New Smith Wales^^ By Mr Pentland. Communicated 

 by the Author. 



A. Genus DA SYURUS. 



A. 1. Portion of the right branch of the lower jaw, con- 

 taining the three posterior molares. 



A. ^. Portion of the superior maxillary bone of the right 

 side, containing the third and fourth molares, and the 

 alveoli of the two anterior molares. 



C. b. Portion of the superior maxillary bone of the left 

 side, containing one molar tooth, much worn down 

 by age. 



A. 4. One of the metacarpal bones, probably the external 

 of the left metacarpus. 



* We hope to be able, in some future Number, to give an anatomical and 

 physiological account of the examination of the internal structure of the spe- 

 cimen, whicn was restored to Dr Monro with this view. — Edit. 



•f The numbers refer to the specimens which we have deposited in the 

 Kdinburgh College Museum. — Edit. 



