386 
•being not the place for a detailed study of the finer structure of 
the nervous system, for which my material is also quite insufficient. 
But, evidently, here are some problems which might well deserve 
being taken up for a doser investigation. 
V. Crinoidea. 
No Crinoid was known from New Zealand seas, until in 1916 
A. H. Clark made known a species found by Mr. Percy Sey- 
mour in Preservation Inlet, on the West Coast of the South Is¬ 
land, which was sent him for determination by Professor Ben ham. 
It was named Comanthus trichoptera benhami, being regarded by 
Dr. Clark as representing merely a variety of the Australian spe¬ 
cies Comanthus trichoptera (Joh. Muller). 
During the author’s investigations in New Zealand seas another 
Crinoid was obtained off Three Kings Island, and specimens of a 
third species were obtained from Captain Bollons, who had dredged 
them in the same region. Specimens of these two forms were also 
submitted to Dr. A. H. Clark, who described them as Comanthus 
novæ-zealandiae and Argyrometra mortenseni}) 
For the present then only these three species (— Comanthus 
benhami being later on thought by Dr. Clark to be entitled specific 
rank —) are known to occur in New Zealand seas. That more 
species will ultimately be found there can hardly be doubted; 
especially the deeper parts of Cook Strait and the Sea off North 
Cape and Three Kings Islands may be expected to yield a rich 
harvest, also in Crinoids. 
I shall give here some figures and a few supplementary remarks 
on two of these species, Comanthus benhami being available only in 
one specimen in a very poor condition, lent me by Prof. Ben ham. 
1) A. H. Clark. The first New Zealand Crinoid. Proc. Biol. Soc. Washing¬ 
ton. XXIX. 1916. p. 48. 
2) A. H. Clark. A new Crinoid from New Zealand, and another from Tas- 
mania. Ibidem. XXXI. 1918; p. 41. 
A. H. Clark. A revision of the Crinoid family Antedonidæ, with the 
diagnoses of nine new genera. Journ. Washington Acad. Sci. VII. 1917. 
p. 127. 
