A FOSSIL ISOPOD OF THE FRESHWATER GENUS PHREATOICUS. 381 



3. Diagnosis of the Fossil Species. 



It is so evident from the foregoing descriptions and figures 

 that we are dealing with a species of Phreatoicus that it 

 is unnecessary to attempt to give a reconstruction of the 

 animal. In place of doing so, I give in Fig. 13a, a repro- 

 duction of the figure of Phreatoicus ausbralis published in 

 1891 in the Records of the Australian Museum, Vol. i, pi. 

 23, fig. 1. In the general figure the individual joints of the 

 peraeopoda are not quite accurately shown, and I therefore 

 also give (fig. 13 b and c) from the same source, repro- 

 ductions of the figures of peraeopoda 3 and 7. If these 



Phreatoicus australis Chilton, 

 a, general view, b, third peraeo- 

 pod, c, seventh peraeopod. 



(Copied from the original figures 

 in Rec. Austr. Museum, Vol. i, 

 pis. 23 and 25, b and c reduced.) 



Fig. 13 b. 



Fi<?. 13 c. 



