Dr. J. E. Gray on the Skeleton of Dioplodon sechellensis. 291 



XXXVIII. — Additional Notes on the Skeleton o/" Dioplodon 

 sechellensis. By Dr. J. E. Gray, F.R.S. &c. 



Mr. Krefft has kindly sent me additional photographs of the 

 skeleton of this animal in the Australian Museum, the ske- 

 leton of the body of which was figured in the ' Annals and 

 Magazine of Natural History,' 1870, vol. vi. p. 343. It was 

 obtained from near Lord Howe's Island. 



Mr. Kreft't complains that the figure taken from his photo- 

 graph does not quite correctly represent the form of the tooth. 

 The fact is, he fears that what is intended for shadow may be 

 taken for the form, so that the tooth may be believed to be not 

 so much exscrted as it is in nature, and impressed with a longi- 

 tudinal groove, as if it had two fangs. This is certainly not 

 the case ; and I do not think that any one would be deceived ; 

 and the photograph, representing the tooth of a larger size, 

 gives the same shadows ; and you cannot represent in wood- 

 cuts all the detaijs of the photograph. Mr. Krefft has sent me 

 photographs of some of the dorsal vertebrse, of a caudal ver- 

 tebra with the chevron bone attached, and the second rib, which 

 is broad at the upper end and gradually narrowed towards the 

 thoracic end ; he observes that the first rib is very small. The 

 imperfect scapula, which has lost its upper front edge, is very 



The second rib. b. The upper and forearm bones 

 c. The scapula (imperfect). 



