Suter. — Notes on New Zealand Mollusca. 321 



the valves ; sometimes dark bands of variable width and ir- 

 regular in distribution may be seen. 



The interior is mostly bluish-white, pinkish-white in the 

 red specimen. The sinus is deep and narrow, pectinate. The 

 slits on a specimen I disarticulated are : head-valve 9, inter- 

 mediate valves 1-1, posterior valve 15. All teeth are blunt 

 and pectinate ; those of the tail-valve are very unequal in 

 breadth. The valve-callus is rather prominent. 



Divergence, 115°. Length, 34 mm. ; breadth, 20 mm. 



#a&— Near Dunedin ; collected by Mr. A. Hamilton, now 

 Director of the Colonial Museum, who kindly gave me a few 

 specimens many years back. 



Type in my collection. 



Remarks.— It is at the special request of Miss M. K. Mestayer, 

 of Wellington, that this mollusc is named in honour of Captain 

 Hutton, F.R.S., &c, in acknowledgment of his continuous 

 very kind help she had the honour to enjoy in her concholo- 

 gical studies. Miss Mestayer found a number of years back 

 a Chiton at Lyall Bay, which Captain Hutton and myself then 

 thought to be a new species, and lately Miss Mestayer kindly 

 lent me the specimen for description, under condition that it 

 should bear Captain Hutton's name, to which I, of course, with 

 greatest pleasure agreed. However, on closely examining the 

 specimen I found it to be a red-coloured mutatio of Chiton 

 aureus, Reeve, one of our rare species. I am very glad indeed 

 to have, nevertheless, an opportunity to comply with Miss 

 Mestayer's wish and unite the name of our honoured leader 

 in natural history with the species. 



I once sent a specimen to Mr. E. R. Sykes in London, asking 

 him to be good enough and compare it with the type of Reeve's 

 cereus in the British Museum. He, with his usual kindness, 

 however, informed me that it was not the supposed species, 

 but seemed to agree with a specimen in the British Museum 

 from New Caledonia which bears the manuscript name perpunc- 

 tatus, Cpr. I do not doubt for a moment the well-known great 

 ability of Mr. Sykes, but, considering that the affinities of the 

 marine Mollusca of New Caledonia and New Zealand are very 

 slender, and having no material from the former country for 

 comparison, I thought it advisable not to take up that manu- 

 script name There may be differences between the two species 

 which a short examination would not reveal. 



Chiton huttoni is in its sculpture nearest allied to C. canali- 

 culars, Q. and G., C. cereus, Reeve, C. limans, Sykes, and 

 C. stangeri, Reeve ; but the diagnosis and figures now given 

 will easily help to separate it from the other species. I have 

 not seen it yet from any other locality. 



11— Trans. 



