On Australian Entomostracans. 261 
last joint of the abdomen is sinuated nearly through its 
whole length. 
Habitat.—River Karua, near Stroud. 
Genus DuNHEVEDIA. (nov. gen.) 
Carapace oval; the anterior margin eiliated, ending in 
a short spine directed downwards. Last segment of the 
abdomen short. 
The two following species so remarkably agree in the 
characters referred to, that I have no hesitation in placing 
them together under a generic name, taken from the 
locality where the larger was discovered. 
(1.) D. crassa.—(Plate VII. F.)—Antenne with a 
small tubercle near the base, furnished with a short seta. 
When seen from the back, the outline of the animal is 
convex at every part, the thickest portion being a little 
below the middle. 
Habitat.—The South Creek, at Dunheved; also Varra- 
ville, near Denham Court. 
(2.) D. podagra. (Plate VII. E.)—Antenne, with the 
tubercle near the base very prominent. When seen from 
the back, the outline at the middle is concave. 
This species is much smaller than the preceding. When 
a number of them are placed together in a glass of water, 
they congregate near the surface. I have not been able 
to make out with distinctness the number of sete on the 
rami of either species. The intestine is much convoluted, 
having in reality two whole turns, although they are not 
in the same or parallel planes: this, however, is common 
to all the Australian Lynceide. 
Habitat.—Ponds behind the old Military Barracks at 
Parramatta. 
Besides the above, I have figured, as Alona mascula, 
