391 
2 fine specimens of this species from olf New Zealand, collected by 
the “Terra Nova” Expedition; they were forgotten in Bell’s report. 
The specieswas recorded from the N.S. Wales Coast in H. L. Clark’s 
report on the “Endeavour” Echinoderms (p. 119); its occurrence in 
New Zealand seas is thus not so very surprising. 
Echinobrissus recens (M. Edw.)^) H. L. Hawkins has recently 
established a new genus Apaiopygus for this species, in a very 
interesting and important paper^) which was not, and, on account 
of the rather exasperating State of scientific records of those years 
immediately after the great war, hardly could be known to me by 
the time my paper on the New Zealand Echinoids was published. 
While I fully agree with Hawkins that the New Zealand species 
cannot be referred to the genus Oligopodia to which it was referred 
by H. L. Clark, but must form a separate genus, I am not so 
very glad to adopt the name Åpatopygus instead of Echinobrissus. 
It may. be that according to the rules of nomenclature the name 
Echinobrissus does not rightly belong to the New Zealand species, 
E. recens; but this seems to me to be a case where exemption 
from the rules might be desirable. Accordingly, in order both to 
call attention to the name proposed by Hawkins and to keep in 
mind the old name I shall for the present designate the New Zea¬ 
land species Åpatopygus (Echinobrissus) recens. 
Ophiomvxa breviriraa H. L. Clark. The statement that this 
species is viviparous is given (Ophiuroidea, p. 97 and 113) as a 
new discovery. In faet, this was observed as long ago as 1898 by 
Farquhar (On the Echinoderm fauna of New Zealand. Proc. Linn. 
Soc. N. S. Wales. 1898. p. 303), which I had overlooked. 
In the same place Farquhar also makes the statement about 
Pectinura cylindrica that it is viviparous. I must confirm this 
statement, and, furthermore, I find that also Pectinura gracilis is 
viviparous. In both species only a single young is found at a 
time in a bursa, and apparantly only in some of the bursae, not 
in all of them, at the same time. Both species likewise are 
1) In the paper on the Echinoidea (p. 184) the author-name has been mis- 
printed as (Mr. Edw.) 
2) H. L. Hawkins. Morphological Studies on the Echinoidea Holeetypoida 
and their Allies. X. On Åpatopygus gen. nov. and the affinities of some 
recent Nucleolitoida and Cassiduloida. Geol. Magaz. LVII. 1920. p. 393. 
