346 
The calcareous ring is well developed, about as in C. amokuræ. 
There is one Polian vesicle and one stone canal. A muscular 
thickening of the very short oesophagus is indicated, immediately 
behind the watervascular ring. The 
retractor muscles are attached about 
midway in the body. The genital 
organs are short, unbranched tubes. 
They contain fairly large eggs in 
the larger specimen, which must 
then be supposed to be nearly adult. 
The colour of the larger specimen 
is blackish on the dorsal side, other- 
wise white; the young ones are 
white. 
The species appears to bear some 
relation to Cucumaria parva Ludwig, 
from which it is, however, very 
easily distinguished through its calc¬ 
areous bodies. Whether it is viviparous, as Cuc. parva, or not, 
remains to be seen, the single nearly adult specimen being, of 
course, insufficient for giving definite proof of this. 
I dedicate this characteristic species to Captain Bollons, who, 
through-his zeal and interest in dredgings, has done so much to 
promote the knowledge of the marine fauna of New Zealand. 
Fig. 32. Calcareous deposils of Ciicii- 
waria Bollonsi. a. Plates; b. buttons; 
c. cups; d. spicule of tubefoot. 
10 . Cucumaria alba (Hutton). 
Chirodota ? alba. Hutton. 1872. Catalogue N. Z. Echinod., p. 17. 
Echinocucumis alba. 
Colochirus 
Cucumaria 
Filholi. 
Hutton. 1878. Notes on some N. Z. Echinod. 
Trans. N. Z. Inst.. XI. p. 307. 
Den dy. 1896. Observ. Holoth. New Zealand. 
Journ. Linn. Soc. Zool. XXVI. p. 35. PI. 4. 21 — 32 - 
Farquhar. 1898. Echinoderm Fauna of N. Z. 
Proc. Linn. Soc. N. S. W. p. 325. 
Ludwig. 1898. Holothurien d. Hamburg Magalh. 
Sammelreise; p. 29. 
R. Perri er. 1903. Sur deux nouvelles espéces 
d’Holothuries de la Nouv.-Zélande. Buli. mus. d’hist. 
nat. p. 144. 
R. P e r r i e r. 1905. Holoth. antarct. Mus. d’hist. nat 
Paris. Ann sc. nat. Zool. 9. Sér. I. p. 85. 
alba. 
