G. M. Taomson.—On the New Zealand Copepoda. 99 
as long, remainder short; all more or less setose. Posterior antenne 
about two-thirds as long as the anterior, slender, 8-jointed, terminating in 
long claw, somewhat like an elongated fourth joint; sete few. Mandible 
tout, strongly toothed; palp 2-jointed, with two sete at the articulation of 
the second joint, and three at its extremity. Maxille (?) not satisfactorily 
made out. First pair of foot-jaws 38-jointed, rather stout, last joint 
2-branched, each branch furnished with several sets. Second foot-jaws 
very long, terminating in a powerful chelate hand, which is directed for- 
ward; this hand is articulated almost at right-angles with the previous 
joint, and is furnished at its lower proximal end with 5 comb-like teeth ; 
palm minutely serrated ; claw as long as the hand, strongly curved. First 
pair of thoracic feet shorter than succeeding pairs; branches 1-jointed, 
furnished with sete of nearly equal length with themselves; three succeed- 
ing pairs long and slender, branches 8-jointed, ciliated on their anterior 
margins, furnished posteriorly with long somewhat plumose sete; last 
pair with the inner branch considerably distended. Fifth pair (?) 1-jointed, 
conical, terminating in a single seta. Length, g inch. 
Colour—pale brown ; integument closely punctated, Riis on the 
cephalic and dorsal obli 
Hab. Numerous specimens were obtained by the dredge in Otago 
Harbour in about 5 fathoms. 
This species cannot be mistaken for any other hitherto described; it is 
nearest A. spherica, Claus, but is sufficiently distinguished by the remark- 
able form of its abdominal segments, by the 6-jointed anterior antenne, and 
by the form of the chelate hand of the second pair of foot-jaws. 
Sub-family CaxrHocauPrINEZE, Brady. 
Genus Diarthrodes, n. gen. 
Anterior antenne 9-jointed ; secondary branch of the posterior antenne 
1-jointed. Mandible-palp simple 2-jointed. Second foot-jaw forming a 
prehensile clawed hand. Outer branch of the first foot very short, 2-jointed ; 
inner branch 8-jointed, the first joint greatly elongated, second and third 
very short; second, third, and fourth pairs of feet with both branches 
8-jointed ; fifth pair 2-jointed. 
` 1. Diarthrodes nova-zealandie, n. sp. Pl. VIII., figs. 15-22. 
Body somewhat tumid ; abdomen much narrower than cephalothorax. 
Anterior antenne tapering, rather densely setose, the relative lengths of the 
joints being as follows :— 
1, 2, 8, 4, 5, 6, Ti 8, 9. 
10. . 10, .123. 10 6. 6. 6. 4% 4, 
Posterior antenns 2-jointed; last joint bearing five terminal and two 
small lateral sete; basal joint with a small 1-jointed appendage bearing 
