374 DISCOVERY REPORTS 



representing Gray's species and amplifying the original scanty description. There are 

 inconsistencies in the Challenger Report, and I conclude that he reinstated C. zelandica, 

 and introduced a new name for it, as an afterthought, without making all the necessary 

 alterations in his manuscript, or relabelling all the specimens in his collection. He 

 apparently thought the new name desirable because he had used Gray's name wrongly 

 for the Cumberland Island specimen, but this is not a valid reason, and C. lyallii is a 

 synonym of C. zelandica. 



My conclusion that the present species is the one that Busk believed to be C. zelandica 

 Gray, and for which he unnecessarily introduced the name C. lyallii, is supported by a 

 number of his specimens. There is in particular a New Zealand specimen (99.7. 1 .886) 

 mounted in one of the styles of the B.M. Catalogue collection, and marked as having 

 come from the British Museum, which Busk successively labelled C. zelanica, C. boryi, 

 C. lyallii. It appears not to be the figured specimen for it has no vibracular setae. 



Marcus's figure (19216, pi. v, fig. la) of a specimen of what he regarded as the 

 aged state of C. darwinii from Juan Fernandez is a characteristic representation of 

 C. zelandica. Through the kindness of Dr Marcus and of Dr Bock, I have been able to 

 examine both the figured slide and the unmounted material, and to confirm their very 

 close agreement with C. zelandica. Dr Marcus also lent me a specimen of this species 

 from Auckland, New Zealand. 



Marcus examined the material from New Zealand recorded as C. boryi by Kirchen- 

 pauer (1889, pp. 268, 269) and showed that, as one might expect from its abundance, 

 it was not true C. boryi. As other New Zealand specimens identified by Marcus with 

 C. darwinii have proved to belong to C. zelandica it may be that Kirchenpauer's material 

 did also, but it is possible that it belonged to C. helicina. 



Hutton (1873, p. 91) apparently included more than one species in C. boryi, and one 

 had a complete bar. He subsequently adopted the name lyallii, as did Hamilton, but 

 without indicating what species was intended. 



The relationship of C. zelandica and C. helicina is discussed on p. 370. 



4. Caberea darwinii Busk. Plate VI, figs. 1-3 ; Figs. 21 A-C, 22 A-C, 23 A-D, 24 A. 

 Caberea darwinii (part) Busk, 1884, p. 29, pi. xxxii, fig. 6 c-/(not fig. 6a, b, see var. occlusal). 

 Caberea darwinii Waters, 1897, p. 10, pi. i, figs. 13, 21-25; Kluge, 1914, p. 618; Hasenbank, 



^S 2 . P- 357- text-fig. 27 A-F. 

 Caberea darwinii (part) Marcus, 192 ib, p. 90. 

 ? Caberea darwinii Marcus, 192 ib, pi. v, fig. 1. 



not Caberea darwinii Marcus, 1921a, p. 96; 19216, pi. v, fig. la ( = C. zelandica). 

 not Caberea darwinii MacGillivray, 1886, p. 129 ( = C. helicina). 



Caberea boryi (part, patagonica on plate) Busk, 18526, p. 38, pi. xxxviii (not C. boryi (Audouin)). 

 Caberea boryi Busk, 1879, p. 194; Calvet, 1904, p. 7; Waters, 1905a, p. 232. 

 Crista boryi Jullien, 1888, p. 75, pi. xiii, fig. 5. 

 Caberea minima Busk, 1884, p. 30, pi. xxxii, fig. 5 a, b, d (not $c = Cellaria). 



