159 
Thinking that perhaps also the closely related Åmphioplus tex- 
tilis Koehler from the Magellan region might have similar short 
I 
genital slits, in spite of the figure (Koehler. Op. cit. PI. XII, fig. 
35) representing them as reaching to the edge of the disk, I asked 
Prof. Joubin to lend me also a specimen of this species for ex- 
amination. My suggestion proved to be correbt, the genital slits of 
this species also are quite short, as in A. basilicus, not reaching be- 
yond the first arrnjoint. — This interesting feature might perhaps justify 
establishing a separate genus for these two species. I shall, how- 
I' ever, for the present, not take up a definite position as to this point. 
There is only one pair of genital organs in each interradial 
'' space; the ovaries are fairly large, containing a number of reddish 
' 0,3 mm large eggs This considerable size of the eggs shows almost 
with certainty that the development is direct, not through a typical 
I Ophiopluteus-larva. 
j Some very young specimens, with only three armjoints devel- 
oped, I have no doubt in referring to this species with which they 
agree especially in the noteworthy feature that there is no regular 
* rosette of primary disk plates. They were found to gether with the 
adult specimens under stones, Campbell Island, 9/XII.14. 
The species appears to be rather common in the littoral region 
at the subantarctic islands and evidently will prove to occur also 
I at the New Zealand shores. (There is no information about the 
depth in which Filhol’s specimens were taken.) 
34. Ophionephthys stewavtensis n. sp. 
Figs. 29.1—3. 
Halfmoon Bay, Stewart Island; 5—7 fms; sand. 19/XI.14. 1 specimen. 
Although the single specimen in hånd is in a very poor State 
of preservation, having lost the disk, I do not hesitate in describ- 
ing it as a new species, the oral and arm structures affording suf¬ 
ficient characters for distinguishing it not only from all other Am- 
phiurids of the New Zealand region, but upon the whole from any 
other species of Amphiurids known till now. 
There is a series of three papillae to each side of the mouth- 
edge, and a very small one in the outer corner, close to the first 
ventral plate. The oral shields are elongate, rounded, with slightly 
