327 
presenting an interesting specialization analogous to that found in 
Psolus. From a biological point of view the most interesting form 
is Psolidiella nigra, which, evidently, is specially adopted to life 
on Coastal rocks, though hardly in places exposed to heavy surf. 
Of the species enumerated above I had no opportunity of study- 
ing the following three: Pseudocucumis bicolumnatus, Molpadia Ma- 
renzelleri and M. Dendyi. 
1. Stichopus mollis (Hutton). 
Holothuria mollis. Hutton. 1872. Catalogue Echinod. New Zealand; p. IS' 
_ — Hutton. 1878. Notes on some New Zealand Echinod. 
Trans. N. Z. Inst. XI. p. 308. 
Stichopus sordidus. Théel. 1886. “Challenger” Holothurioidea. II. p. 167. 
PI. VIII.3. 
Holothuria victoriæ. Bell. 1887. Studies in Holothurioidea. VI. Proc. 
Zool. Soc. p. 534. PI. XLV.7. 
Stichopus mollis. Den dy. 1896. Observ. Holoth. New Zealand. J. Linn. 
Soc. Zool. XXVI. p. 46. PI. 7.73—82- 
_ __ Whitelegge. 1897. OnStichopusmollis. Rec. Austral. 
Mus. III.o. p. 50. 
_ _ Farqu har. 1898. Echinod. Fauna New Zealand. Proc. 
Linn. Soc. N. S. W. p. 326. 
— — Ludwig. 1898. Holoth. Hamburg. Magalhaens. Sam- 
melreise; p. 7. 
— — R. Perri er. 1905. Holoth. Antarct. Mus. Paris. Ann. 
Sc. Nat. Zool. 9. Sér. I. p. 83. 
— — Dendy&Hindle. 1907. Add. Knowl. N. Z. Holoth. 
J. Linn. Soc. Zool. XXX. p. 96. PI. I2.12. 
— simulans. Dendy & Hindle. Ibidem, p. 97. P. II.5. 
— mollis. W. Erwe. 1913. Holoth. Siidwest-Kuste Austral. in: 
Hartmeyer& Michaelsen: Fauna S. W. Austra¬ 
liens. IV. p. 387. Taf. VII 22- 
— simultans (sic!) W. Erwe. Ibidem. p. 388. Taf. VIII os-a—d. 
— mollis. J oshua. 1914. Victorian Holothurioidea. Proc. R. Soc. 
Victoria. 27. p. 2. 
— simulans. ] oshu a. Ibidem. p. 3. 
— mollis. H.L. Clark. 1922. The Holothurians of the genus 
Stichopus. Buil. Mus. C. Zool. LXV. p. 60. 
— simulans. H. L. Clark. Ibidem, p. 69. 
Paterson Inlet, Stewart Island; 5—15 fms. 17/XI. 1914. Several specimens. 
Queen Charlotte Sound; 3-10 fms. 20/1. 1915. 8 specimens. 
Wellington Harbour; 5—10 fms. 16/11. 1915. 2 specimens. 
Plimmerton; the coast, at low water. 15/1. 1915. 1 specimen. 
