ME. H. rAEQTJHAE ON NEW ZEALAND ECHINODEEMS. 187 



I take this opportunity of correcting errors in my previous 

 paper on New Zealand Ecliiuoderms (Trans. N. Z. Inst. vol. xxvii. 

 p. 194). Throughout that paper I have inadvertently used the 

 wrong descriptive terms for the pedicellarise : " forcipiform " 

 should be " forficiform," and vice versa. Corrections of mistakes 

 in nomenclature will be found noted where necessary. 



I desire to acknowledge my great indebtedness to Mr. Sladen's 

 admirable monograph of the Asteroidea (' Challenger ' Report, 

 vol. XX5.). He has there thrown a flood of light on this class, and 

 reduced to order a mass of material which was largely in a state 

 of chaos. The late Mr. Lyman's monograph of the Ophiuroidea 

 (' Challenger ' Report, vol. v.) has also been of much assistance, 

 enabling me to identify species, and place them in their proper 

 systematic position. Every worker at the Echinoderms must be 

 thankful for these two important works. 



The identification of specimens is often rendered a matter of 

 considerable difficulty by the limited number of works of reference 

 available in New Zealand ; and students of nature feel the dis- 

 advantage of being so far away from all the great scientific 

 libraries. 



I had hoped to have published a complete list of New Zealand 

 Echinoderms, v^ith synonymy, references, and distribution of the 

 species, which I have compiled ; but one or two doubtful points 

 in the synonymy have occasioned delay in publication. 



ECHINOIDEA. 



EcniNOCAEDIITM ATJSTEALE, Gray. 



In a former paper (" Notes on N. Z. Echinoderms," Trans. 

 N. Z. Inst. vol. xxvii.) I stated that the specimens of Echino- 

 cardium collected by me in the Wellington Harbour differed 

 markedly from the Australian form E. ausirale. I have since 

 received a fine example of -2J. australe^ and a series of inter- 

 mediate specimens, collected by Mr. Lukins at Nelson. The 

 form which is abundant in Wellington Harbour is therefore 

 merely a local variety of the common Pacific species ^. australe. 

 This species is remarkable for its range in depth, extending from 

 a few feet to 2675 fathoms, at which great depth it was taken 

 near Japan by the naturalists of the ' Challenger ' Expedition 

 Its geographical range is also great, including the whole of the 

 Southern Ocean, and extending northwards to Japan. 



