392 
hermaphroditic. In P. cylindrica there is a single ovary at the 
distal end of the bursal slit, at the adradial side, and one or two 
testes at the proximal end of the slit, at the abradial side. In P. 
gracilis there are 1—3 genital organs at the adradial and a series 
of upto 6 along the abradial side of the slit; it appears that the 
ovaries and testes occur among one another, without definite order. 
The eggs seem to be remarkably small for viviparous Ophiurids, 
only ca. O.25 mm — but the eggs observed may possibly not be 
so nearly ripe, and thus may perhaps grow to a somewhat larger 
size, before they are ripe. 
It is a highly interesting faet that thus no less than three new 
viviparous and hermaphroditic Ophiurans: Amphiura annulifera ^nd 
the two Pectinura-spQciQS, have been discovered among the New 
Zealand Ophiurids, against only one, Ophiomyxa brevirima, with 
separate sexes. This faet greatly emphasizes the relation between 
viviparity and hermaphroditism that the author has previously shown 
to exist in Ophiurids (“On Hermaphroditism in viviparous Ophiuroids”. 
Acta Zoologica. I. 1920). 
Opbioplocus Huttoni Farquhar. In his report on the Ophiuroids 
of the Australasian Antarctic Expedition (Vol. VIII. 2 . 1922. p. 47) 
Koehler has established, for an antarctic species, O. incipiens 
Koehler, the genus Ophioceres, related to Ophioplocus but differing 
from the latter genus in the breaking up of the dorsal plates being 
not carried so far, and in the presence of only one tentacle papilla. 
To this genus he also refers the New Zealand species, .evidently 
with full right. The name of the New Zealand species will then be 
Ophioceres Huttoni (Farquhar). 
In February—April 1924 the Swedish Zoologist Sten Vallin, 
partaking in a Whaling-Expedition to the Antarctic Sea, had the 
opportunity of collecting some Echinoderms also at Campbell Island 
(Perseverance Harbour) and at Stewart Island (Paterson Inlet). 
These specimens were kindly placed at my disposal by my friend 
Professor O. Ca rigren. Lund. Besides the very interesting new 
Holothurian, Psolidiella nigra, described above, the collection 
proved to contain nothing of special importance. The species col- 
lected were the following: 
