ARRIVE AT MORETON BAY. 45 



for the purpose of running a meridian distance^ and 

 ours Moreton Bay. 



One day^ while off Cape Byron^ an interesting 

 addition to zoology was made in a small floating' 

 shell-fish^ which has since proved to constitute a 

 neAV genus^* throwing light^ I am informed^ upon 

 nian}^ fossil univalves in the older formations 3 and a 

 rare bird of the noddy kind (Anous leucocapillus) 

 perched on the rigging towards evenings and was 

 added to the collection ; for even the heauty and 

 innocence of a tired wanderer like it was insufficient 

 to save it from the scalpel. 



On Oct. 18th we anchored in Yule's Eoads^ More- 

 ton Bay, in 12 fathoms, sand, about a mile off 

 shore, and remained there for sixteen days. During 

 our stay, some additions were made to render more 

 complete the former survey of this important sheet 

 of water. Buoys were laid doAvn to mark the 

 intricate channels of the north entrance, now pre- 

 ferred for its greater safety to the south entrance, 

 although lengthening by about 50 miles the passage 

 to or from Sydney. The wreck of a steamer, and 

 loss of most of those on board, had not long' before 

 caused a great sensation, and forcibly attracted 

 attention to the dano-ers of the southern entrance. 



Moreton Bay is an expanse of water 45 miles in 

 length, and 20 in greatest width, enclosed between 



* This mollasc, allied to Litiopa, Professor E. Forbes has 

 done me the honour to publish in the Appendix as Macgillivrcnjia 

 pelagica. 



