136 
beyond any doubt by the faet that it is not viviparous and not 
hermaphroditic, as is magellanica. Also the eggs are distinetly 
smaller, only ca. 0,i mm, those of magellanica ca. 0,2 mm, and 
probably it has then typical pelagic larvæ. 
The species is, upon the whole, smaller and more delicate than 
magellanica-, the largest specimen measures 5 mm diameter of disk; 
the arms are ca. 4—5 times the length of the diameter of disk. The 
long ventral armspines give the arms a very peculiar appearance, 
looking more like feet than like spines, and the suggestion lies at hånd 
that they do really act as such (the species-name spinipes is meant to 
refer to this); they are gradually inereasing in length from the base 
of the arm to the 8th—lOth joint, remaining very long on some 
20—25 joints, and then again gradually diminishing in length to- 
wards the point of the arm. It can hardly be doubted that this 
Amphiurid lives among shells a. o. hard objects on the bottom, not 
burying itself in the sand or mud, as do most other Amphiurids. 
Its long spines would, evidently, be very unfit for digging, but very 
useful for crawling among hard objects, in the same way as does 
Åmph. magellanica, the armspines of which are exaetly similar, only 
somewhat more robust. 
Three specimens from North Channel, Kawaii, Hauraki Gulf, 
10 fms (29/XII.14) I must hesitate in simply referring to this 
species. They are, in faet, more like A. magellanica, but not being 
viviparous nor hermaphroditic they cannot belong to that species. 
They are somewhat more robust than Å. spinipes, and the ventral 
spines not so long as they generally are in that species. Also the 
eggs are somewhat larger. — I shall prefer to leave undecided 
at present, whether they should be regarded as a variety of Å. 
spinipes or as representing, perhaps, a separate species. But it may 
be useful to call attention to the possible existence in New Zea¬ 
land seas of still another species of the group of Åmphiura’s with 
elongate ventral spines. 
21. Amphiura pvæfecta Koehler. 
Figs. 17.a—c, 
Amphiura præfeeta. R. Koehler. 1907. Revision de la collection des 
Ophiures du Muséum d’hist. Nat. Paris. Buli. sci. 
Fr. & Belgique. XLI. p. 302. 
— — H. L. C 1 ark. 1915. Catalogue Rec.Ophiurans;p.235. 
