Chilton. — Ci-ustacea of the Kennddcr /shn/dx. 545 



of the few land and fresh-water forms are somewhat indefinite, owing to the 

 incompk^cness of our knowledge of these forms from neighbouring lands, 

 but on the whole they appear to show more connection with New Zealand 

 than the marine forms do. 



A few of the species from the Kermadecs are of especial interest — e.g., 

 the occurrence at these islands of the amphipod Eurythenes gryllus still fur- 

 ther extends the distribution of this large amphipod, which has already 

 attracted so much attention. It is perhaps worth while calling attention 

 to the occurrence at the Kermadecs, and to the habits of Actaeomorpha erosa, 

 Cryptockirus coraUiodytes, and Porcellanopagurus tridentatus. 



Sufficient information about the size, position, &c., of the Kermadecs 

 will be found in the papers by Mr. W. R. B. Oliver* and Mr. R. Speightf 

 in a previous volume of the Transactions. Mr. Oliver has dealt specially 

 with the botany, while some of the groups of animals have been already 

 investigated by "Mr. Edgar R. Waite,f Professor W. B. Benham,§ Dr. F. W. 

 Hilgendorf,|| Professor H. B. Kirk,^ and Mr. T. Iredale.** It will be 

 sufficient to state here that the Kermadecs form a group of four islands 

 lying in a line extending from Sunday Island (lat. 29° 50' S., long. 177° 

 59' W.) to French Rock (lat. 31° 24' S., long. 178° 51' W.). The whole 

 group lies about half-way between New Zealand and the Tonga Islands. 



I have followed the classification given by Dr. W. T. Caiman in his 

 account of the Crustacea in Ray Lankester's " Treatise on Zoology," but 

 as a matter of convenience I have placed the Decapoda first. Only those 

 synonyms and references have been given that appear to be necessary. 



My hearty thanks are due to Mr. Oliver for the opportunity of examining 

 the collection, and for the thorough manner in which he collected and care- 

 fully recorded all the specimens available. I am also indebted to Pro- 

 fessor Benham and Messrs. Waite and Hamilton for the loan of books from 

 the libraries under their control. 



LIST OF SPECIES. 



Subclass MALACOSTRACA. 



Order DECAPODA. 



Suborder Natantia. 



Plesionika spinipes Spence Bate. | Alpheus socialis Heller. 



Merhippolyte spinifrons (Milne - Ed- ? Arete dorsalis Stimpson. 



wards). Synalpheus sp, 



Alope palpalis White. Betaeus sp. 

 Bhynchocinetes rugulosus Stimpson. 



* "The Vegetation of the Kermadec Islands," Trans. N.Z. Inst., vol. 42, p. 118. 

 t " Petrological Notes on Rocks from the Kermadec Islands," Trans. N.Z. Inst., 



42, p. 241. 



t " A List of Known Fishes of Kermadec and Norfolk Islands, and a Comparison 

 with those of Lord Howe Island," Trans. N.Z. Inst. ,.42, p. 370. 



§ " Stellerids and Echinids from the Kermadec Island.s," Trans. N.Z. Inst., 43, p. 140. 



II " On some Calyptoblast Hydroids from the Kermadec Islands," Trans. N.Z. 

 Inst., 43, p. 540. 



t " The Sponges collected at the Kermadecs by Mr. Oliver," Trans. N.Z. Inst., 



43, p. 574. 



** " On Marine MoUusca from the Kermadec Islands," Proc. Mai. Soc, 9, pt. 1, 

 p. 68 (March, 1910). 



18— Trans. 



