BY J. c. COX. 427 



recorded on p. 273 No. 633, as Chiton glaucus, and he makes it 

 synonymous with Ch. Quoyi, Desh., and refers to Reeve's fig. 68 

 in his Mon. of Chitons in Vol. iv. pi. xiii. 



It is also referred to in Hutton's Man. of the Moll, of New- 

 Zealand, p. 112, 1880, as occurring in New Zealand, which is its 

 true home. 



I wish to point out that the name glaucus will not hold good 

 for this species ; and in the second place, that I have very great 

 doubts if this species has really ever been taken in Port Jackson. 



Gray's Ch. glaucus was described in 1828 in Spicilegia Zoo- 

 logica, part 1, p. 5 ; it was not figured and the habitat of his 

 species was unknown. He states that it was white inside, glaucous- 

 green outside. 



Pilsbry remarks (Man. of Conch, by Tryon and Pilsbry, Vol. 

 xiv. pp. 172, 173) : — " Gray's glaucus had lost its girdle. No 

 one has seen Gray's type, and its generic characters are wholly 

 unknown. I have never seen a glaucous-green specimen of this 

 species white inside ; they are always blue. The identification of 

 Quoy and Gaimard's well described and figured species with Gray's 

 is highly hypothetical." 



Gray's name glaucus, therefore, will have to be dropped. 



The next name, Ch. viridis, which was given to the species by 

 Deshayes, will also have to succumb, as the name was given by 

 Spengler earlier to another species. 



Quoy and Gaimard repeated the name of viridis in Voyage de 

 I'Astrolabe, Zool. iii. p. 383, pi. lxxiv. figs. 23-28, in 1834. 



The same Chiton was described by Deshayes in 1836 in 

 Lamarck's Anim. sans Vertebres, vi. p. 509, as Quoyi, and this 

 name has been adopted by Pilsbry, the most recent monographer 

 on the Chitons, in his Monograph on the Polyplacophora, Vol. xiv. 

 p. 172, Man. of Conch, by Tryon and Pilsbry, 1892. 



I have never myself taken a specimen of this species in Port 

 Jackson, nor have I ever been able to obtain one taken from 

 there, nor have I seen one. I find no such species taken from 

 Port Jackson either in the Macleay Museum or the Australian 

 Museum Collections. I do not say that it has not been found, 

 29 



