74 ME. GEOFFEEY WATKIN SMITH ON THE 



not project one beyond the other. All are armed with very prominent spines. In 

 uropod 3 the outer ramus is short, and bears a rudimentary terminal joint ; no plumose 

 setaB (PL 13. figs. 12 & 13). 



The telson is obtusely cleft rather less than halfway to the base ; the lobes carry 

 about six stout spines apiece (PL 13. fig. 14). 



The metasome is devoid of spines or setae, except ou the last two segments, which bear 

 a few spines dorsally. 



Length 10 mm. 



Colour. Dark blackish green to pale yellow. 



Occurrence. In Yule's Lake on the top of Ben Lomond, at about 4000 ft. 



Neoniphargus exigous, sp. n. 



Head longer than first segment. Eyes large, irregularly crescentic. 



Pirst antennae not long ; segments of peduncle stout, the third distinctly shorter than 

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

 first joint of flagellum (PL 14. fig. 1). 



Pereiopods thickly clothed with rather stout setae ; terminal joint elongated (PL 14. 

 fig. 4). 



The third pair of uropods project slightly beyond the other two pairs, which carry the 

 normal spines. 



In uropod 3 the outer ramus is fairly long and stout, well armed with spines, with a 

 terminal joint and without plumose setse (PL 14. fig. 2). 



The telson is acutely clef t rather more than halfway to the base; the lobes are slightly 

 concave at the end, carry three terminal spines and a few lateral ones (PL 14. fig. 3). 



The segments of the metasome carry a few long spinules. 



Length 6 mm. 



Colour. Dirty yellow. 



Occurrence. In weed and mud in small stream near Huntingfields. 



Neoniphargus tasmanicus, sp. n. 



Head slightly longer than first segment. Eyes large, crescent-shaped. 



Pirst antennae more than half as long as body, tbe third segment of peduncle distinctly 

 shorter than second ; a few bunches of setse on peduncle ; secondary appendage two- 

 jointed, distinctly longer than first joint of flagellum (PL 14. fig. 5). 



Pereiopods armed with setae, which are not very stout or conspicuous ; terminal joint 

 elongated (PL 14. fig. 8). 



The third pair of uropods project distinctly beyond the second and first ; the uropods 

 are armed with not very strong spines. 



In uropod 3 the outer ramus is long, bears a rudimentary termiual joint, is feebly 

 armed with spines, and carries three plumose setae (PL 14. fig. 6). 



The telson is acutely cleft more than halfway to the base ; the lobes have a pointed 

 angle and carry a single stout spine each (PL 14. fig. 11). 



