© 
or 
— 
found in New South Wates. 
The profile is subject to a little variation. I have not 
as yet discovered the male. 
The habits are rather sluggish. Locality :—A small 
pond in a garden at Cook’s River, near Sydney. 
(2.) Moina Macleayii. (Plate V). Head triangular ; 
the eye in the apex of the triangle, large; carapace 
roundish-oval, smooth, without seta on the margin. 
The superior antenne are long, with a single seta 
springing from the upper edge. The inferior antennz 
have the basilar joint of moderate size; a single seta 
springs from one of the crenations on the side, and a 
jointed seta, nearly as long as the posterior branch of the 
antenne, springs from the top. The anterior branch has 
four short plumose setz springing from the extremity 
of the last articulation, and one from the penultimate. 
The posterior, branch has three short-jointed sete and a 
short spine springing from the extremity of the last articu- 
lation—one longer from the penultimate, and one still 
longer from the antepenultimate. The last segment of 
the abdomen is longer than in M. lemne, and has one 
small process directed upwards, closing the receptacle for 
the ova. There are small spines round the anus. 
The long seta on the posterior branch of the inferior 
antennz brings this species near the genus Macrothrix 
(Barry), from which, however, it differs in the character 
of the superior antenne. 
The habits are rather active. It clings to the side of 
the glass at times (but rarely), like ee Elizabethe. 
The male is unknown. 
I have dedicated this pretty species to my friend W. S- 
M‘Leay, Esq., by his kind permission (in whose company 
it was captured in asmall pond near his garden at Elizabeth 
x2 
