On Fresh-water Entornostraca. 17 



slightly convex. The defining upper corner of the anal 

 sinus is, on the other hand, more prominent and nearly 

 rectangular. The anal denticles are 10 — 12 on each side, 

 increasing, as usual, rapidly in length distally. The terminal 

 claws are perfectly smooth, without any trace of secondary 

 teeth. 



The ova in the matrix are comparatively larger than 

 in the preceding species, though sometimes present in a 

 rather considerable number. 



Occurrence. — Of this pretty species a number of spe- 

 cimens were collected by Mr. Whitelegge in the Centennial 

 Park, near Sydney. 



Gen. Moina, Baird. 



6. Moina propinqva, G. O. Sars. 



Moina propinqva, G. O. Sars, On some Australian 

 Cladocera raised from dried mud, p. 29, PI. 5, figs. 4, 5; 

 PI. 6. 



Of this species, which in its general appearance strongly 

 recalls the European M. braciata, some few specimens were 

 collected by Mr. Whitelegge from waterholes off Bourke 

 Street. 



The same form was also raised in one of my aquaria, 

 from mud derived from the same locality. It did not, 

 however, multiply to nearly such an extent as the 2 suc- 

 ceeding species. 



Distribution. — Queensland (G. O. Sars). 



