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 HARPACTICID^E. 



Subfamily L o i\ Q i p e d i i n m. 



Genus Ectinosoma Boeck. 



1. Ectinosoma austeale, sp. nov. (Plate X. figs. 18-25.) 



Antennules seven-jointed (?) ; first three joints stout and short, the succeeding joints 

 much more slender (fig. 18); antennas (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 seta?, one of which is long, the other very short; outer segment laciniated, 

 its inner lobe bearing, like the neighbouring segment, two unequal seta?, external to 

 which are three short processes bearing single apical seta?, the first and third short, 

 the second long and slender. Caudal lamina? (fig. 25) very short and wide ; seta? 

 slender, non-plumose, the central one about twice as loug 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 TachidiiSjE. 



Genus Eutekpe Claus. 

 1. Eutekpe gracilis Claus. 



1863. Euterpe gracilis Claus (i), p. 110, pi. xiv. figs. 1-13. 



1880. „ „ G. S. Brady (i), p. 22, pi. xl. figs. 1-16. 



1892. „ acutifrons Giesbrecht (i), p. 555, pi. xliv. 



1852. ? Harpacticus acutifrons Dana (2), p. 1192, pi. lxxxiii. figs. 11a, 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. — part 11. No. 2. — August, 1899. n 



