G. M. Tuomson.—On the New Zealand Copepoda. 93 
Art. IV.—On the New Zealand Copepoda. By Gro. M. Tuomson, F.L.S. 
(Read before the Otago Institute, 9th May, 1882.) 
Plates V. to XI. 
Iw the N.Z. Inst. Trans., Vol. XI., pp. 258-259, I described two species of 
Entomostraea belonging to the Order Copepoda—viz., Cyclops nove-zea- 
landie and Arpacticus bairdii. I had numerous other forms in my collec- 
tion at the time, but, from want of text-books on this little-known order, 
was unable with any certainty to work them out. This difficulty having 
been in great measure overcome, I am now enabled to contribute 
a little information to our knowledge of this interesting group of 
animals. - 
The forms described in this paper have been obtained from only a few. 
situations, the marine species being either from rock-pools or shore-kelp 
along the coast, or taken by the dredge in Otago Harbour at a maximum 
depth of 6 fathoms. Small as the number of species already identified is, 
they show a remarkable approximation to European forms. As the litera- 
ture of the subject is not readily accessible to members of the N.Z. Institute, 
I make no apology for introducing generic characters. The classification 
followed is that adopted by Brady in his beautiful ‘“ Monograph of the 
British Copepoda,” recently issued by the Ray Society. 
Of the 8 families represented in the British fauna, I have only met with 
representatives from 4—namely, Calanide, Cyclopide, Harpacticide and 
Artotrogide. 1 
(Note.—Four species of Copepoda were obtained by Dana near New Zealand, and are 
described in the ** Crustacea of the U.S. Exploring Expedition (1855) ;” they are Pontella 
valida, Pontellina simplex, Sapphirina gemma and Miracia gracilis). 
Fam. CALANIDA. 
Sub-fam. CALANINÆ, Dana. 
Eye single, composed of several lenses; thorax and abdomen long and 
slender; rostrum (if present) slender, and usually fuscate; anterior an- 
tenn 24—25-jointed. 
Genus Boeckia,* gen. nov. 
Body elongated, compressed ; head not distinct from thorax. Abdomen 
-consisting of five segments in the male, and of three in the female. Right 
anterior antenne of the male geniculated. Posterior antenne two-branched, 
the secondary branch having four small intercalated median joints. Man- 
dibles large, with a sharply toothed cutting portion, and a broad palp; the 
latter bears two branches, one four- and the other three- (or two-) jointed. 
Maxillx furnished with numerous strong marginal plumose sete. Anterior 
* In honour of Axel Boeck, author of several works on Copepoda. 
