MARINE COPEPODA OF NEW ZEALAND. 39 
reference and thinks that they belong to 0. spinifrons Claus, but in the length of the 
antennules and some other characters they seem to me to agree more closely with 
Boeck’s species. 
Family HARPACTICIDA. 
Subfamily LoN@IPEDIIN«. 
Genus Ecrinosoma Boeck. 
1. EcTINOSOMA AUSTRALE, sp. nov. (Plate X. figs. 18-25.) 
Antennules seven-jointed (?); first three joints stout and short, the succeeding joints 
much more slender (fig. 18); antenne (fig. 19) nearly as long as the antennules, three- 
jointed, secondary branch three-jointed, the second joint very short. Mandibles 
(fig. 20) with one large terminal tooth and four short spinules ; palp long, two-jointed, 
and bearing on the first joint a minute two-jointed branchlet. The mouth-organs 
(figs. 21, 22) and swimming-feet (fig. 23) present no special features. Feet of the 
fifth pair (fig. 24) much subdivided ; inner segment digitiform and bearing two apical 
spine-like sete, one of which is long, the other very short; outer segment laciniated, 
its inner lobe bearing, like the neighbouring segment, two unequal sete, external to 
which are three short processes bearing single apical setz, the first and third short, 
the second long and slender. Caudal lamine (fig. 25) very short and wide; sete 
slender, non-plumose, the central one about twice as long as the two principal laterals, 
Length ‘66 millim. 
Hab. Otago Harbour, between tide-marks. 
The distinctions between many so-called species of Ectinosoma are extremely slight, 
and in this case the fifth foot is the only member which presents very definite characters. 
In the present state of our knowledge it seems very doubtful whether this, as well as 
some others, should not rank rather as varieties than as distinct species. 
Subfamily TAcHIDIIN &. 
Genus EvrerPe Claus. 
1. EvrerPe eraciiis Claus. 
1863. Euterpe gracilis Claus (1), p. 110, pl. xiv. figs. 1-13. 
1880. ii »  G.S. Brady (1), p. 22, pl. xl. figs. 1-16. 
1892. »  acutifrons Giesbrecht (1), p. 555, pl. xliv. 
1852. ? Harpacticus acutifrons Dana (2), p. 1192, pl. Ixxxiii. figs. 11 a, b. 
This species was found plentifully in most of the gatherings. In the surface-net 
from Otago Harbour and Port Chalmers ; in the net at 6 fathoms, Auckland Harbour 
7 fathoms, off Gisborne; 8 fathoms, off Napier. 
VoL. XV.—PaRrt 11. No. 2.— August, 1899. By) 4 
