130 Recent Discoveries in 



of the existence of sponges in sweetwater in other countries ; I 

 therefore mention to yon this fact. 



I had opportunities of collecting a large number and variety 

 of spiders, a beautiful species of spined lobster, and two other 

 varieties of crawfish, and three kinds of shrimps — all found in 

 the Murray. Concerning the insects collected, I need only say, 

 there are 3000 delivered to the Museum, where all orders are 

 represented which exist in the country. 



Only two mussel shells were known to exist in the Murray. 

 I have the pleasure of informing you that I have found eight 

 bivalves, belonging to Unio family, and six univalves, be- 

 longing to Lymnea, Succinea, and Physa, of which three are 

 viviperous. I have preserved a large number of them in 

 spirits of wine, and they can be seen at the Museum. 



There were only three kinds of fish known to exist in the 

 Murray, and of which, Sir Thomas Mitchell gives good draw- 

 ings. I beg to lay before you nineteen different forms of fish 

 living in the waters of the Murray and Billibong. 





