MARINE COPEPODA OF NEW ZEALAND. 49 
long and slender (fig. 24). Antennules very short, fourteen-jointed (?) (fig. 23), the 
basal joints very indistinctly marked; comparative lengths of the joints as in the 
Ig nie at alo RG interne cla MORI ales 1! a: 
SE) ae a es First segment of the 
following formula: 
abdomen much longer than the following segments, inclusive of the furca (fig. 26). 
The mouth-organs and swimming-feet present no distinctive characters. Length 
1*1 millim. 
Hab. Akaroa Harbour, 6 fathoms. 
Genus CaLicus. 
1. Caiicus LONGICAUDATUS, sp. nov. (Plate XII. fig. 26.) 
A single specimen of a Caligus, which seems distinct from any described species, 
occurred in a surface-net gathering from Port Chalmers. The much elongated 
abdomen, the abruptly angular carapace, together with the slenderness and length of 
the last pair of feet, are the chief distinctive characters. Length 5 millim. 
EXPLANATION OF THE PLATES. 
PLATE IX. 
Paracalanus parvus, p. 32. 
Fig. 1. Antennule of male, x 140. 
Fig. 2. Foot of fifth pair of male, x 210. 
Clausocalanus fureatus, p. 32. 
. Female, seen from right side, x 84. 
. Fifth pair of feet of female, x 250. 
. Antennule of male, x 84. 
. Fifth pair of feet of male, x 210. 
. Abdomen and foot of fifth pair, g , seen laterally, x 165. 
tr 
er 
0g 
ID oF oo 
Acartia ensifera, p. 33. 
Fig. 8. Female, seen from above, X 84. 
Fig. 9. Abdomen of female, seen from right side, x 110. 
Fig. 10. Fifth pair of feet of female, x 210. 
Fig. 11. Terminal spine of one of the swimming-feet, x 210. 
Fig. 12. Right antennule of male, x 140. 
Fig. 13. Left antennule of male, x 140. 
Fig. 14. Abdomen of male, x 110. 
Fig. 15. Fifth pair of feet of male, x 250. 
