FRESHWATER CRUSTACEA OP TASMANIA. 75 



The metasonie is devoid of spines, except on the last two segments as in K. yuli. 



Length 8 mm. 



Colour. Dark hrown. 



Occurrence. In the littoral zone of the Great Lake. 



Neoniphargus wellingtoni, sp. n. 



Head as long as two succeeding segments. Eyes small, oval. 



First antennae stout, not long, the third segment of peduncle suhequal to second ; 

 peduncle with a continuous row of long simple setae, the whole of antennas having very- 

 setose appearance. 



Secondary appendage single-jointed, very short, much shorter than first joint of 

 flagellum (PI. 14. fig. 9). 



Pereiopods armed with long hut slender setae ; terminal joint short, stout, with recurved 

 claw (PI. 14. fig. 12). 



The first pair of uropods project slightly beyond the other two pairs ; all are armed with 

 very long but not stout spines. 



In uropod 3 the outer ramus is short and without rudimentary terminal joint, bearing 

 at the end four or five spines instead. No plumose setas (PL 14. fig. 10). 



The telson is rather acutely cleft more than halfway to the base ; the lobes are blunt 

 at the end and carry five stout spines (PI. 14. fig. 11). 



The metasome has all the segments spiny dorsally, especially the posterior ones. 



Length 7 mm. 



Colour. Very dark greenish. 



Occurrence. Under stones &c. in small streams on eastern face of Mt. Wellington, 

 about 3000 ft. 



Neoniphargus alpintjs, sp. n. 



Head slightly longer than first segment. Eyes small, crescentic. 



Eirst antennas not long ; segments of peduncle stout, the third slightly shorter than 

 second, with bunches of setae. Secondary appendage two-jointed, distinctly longer than 

 first joint of flagellum (PI. 14. fig. 13). 



Pereiopods not very thickly clothed with long and rather fine setae ; terminal joint 

 much elongated. Joints of pereiopods, as a whole, longer and thinner than in N. exiguus, 

 which this species closely resembles (PI. 14. fig. 16). 



The third pair of uropods project slightly beyond the other two pairs. 



Uropod 3 has the outer ramus long and rather slender, with a terminal joint and with- 

 out plumose setae (PI. 14. fig. 14). 



The telson is acutely cleft more than halfway to the base ; the lobes are slightly 

 concave at the end, carry two terminal spines and no lateral ones (Pi. 14. fig. 15). 



The segments of the metasome are smooth and without spines, except the last two. 



Length 8 mm. 



Colour. Olivaceous grey. 



Occurrence. In mountain tarns on the West Coast (Mt. Read) at about 3000 ft. 



