426 Transactions, 



Suborder Chitonina — continued. 

 Fam. Chitonidae Thiele. 



Genus Sypharochitox Thiele. 1893. Sypharochiton Thiele, " Das 

 Gebiss der Schnecken," vol. ii, p. 365, 1893. Type : Chiton 

 pellisserpentis Quoy and Gaimard. Synonym : Triboplax 

 Thiele, loc. cit., p. 366. 

 Spharochiton pellisserpentis (Quoy and Gaimard, 1835). 



sinclairi (Gray, 1843). 



torri (Suter, 1907). 



Genus Amaurochiton Thiele, 1893. Amaurochiton Thiele, loc. cit., 

 p. 362. Type : C. olivaceus Deshayes. Synonym : Poecilo- 

 plax Thiele, loc. cit., p. 365. 



Amaurochiton glaUcus Gray, 1828. Chiton glaucus Gray, " Spici- 

 legia Zoologica," pt. i, p. 5, 1828. Synonyms: C. viridis Quoy 

 and Gaimard, 1835; C. quoyi Deshayes, 1836; C. quoyi subsp. 

 limosus Suter, 1905. 

 Genus Rhyssoplax Thiele, 1893. Rkyssoplax Thiele, loc. cit.. p. 368. 

 Type: Chiton affinis Issel. Synonyms: Clathropleura -Thiele, 

 loc. cit., p. 367 (not of Tiberi, 1878); Anthochiton Thiele, 

 loc. cit., p. 377. 



Rhyssoplax aerea (Reeve, 1847). 



canaliculata (Quoy and Gaimard, 1835). Synonyms : Chiton 



stangeri Reeve, 1847; C. inscvlptus A. Adams, 1854. 



clavata (Suter. 1907). 



hiiMoni (Suter, 1906). 



Hindus (Pilsbry, 1893). Chiton limans Pilsbry, Man. Conch., 

 vol. xiv, p. 176, 1893. Synonym : C. muricatus A. Adams, 

 1854, notTilesius, 1824. 



suteri (Iredale, 1910). Synonym : Chiton stangeri Suter, 



1897, not Reeve, 1847. 



Genus Oxithochitox Gray, 1847. 



Onithochiton marmoratus Wissel, 1904. Synonym: Onithochiton 

 nodosus Suter, 1907. 



suba Suter, 1907. 



neglectus Rochebrune, Bull. Soc. Philom. Paris, ser. 7, 



vol. v, p. 120, 1881 : Wellington, X.Z. Synonyms : Chiton 

 undulatus Quoy and Gaimard, 1835, not Wood, 1828 ; Onitho- 

 ciiiion astrolabei Rochebrune, loc. cit., p. 120; O. filholi, id. 

 ib. : O. decipiens, id. ib., vol. vi, p. 196, 1882 : O. semisculptus 

 Pilsbry, 1803. 



There is still much to be done in the investigation of the Neozelanic 

 Chiton fauna, as, in addition to the preceding, I have unicums representing 

 two distinct species, and I have two other recognizable species hitherto 

 confused. I have also seen a deep-water Lepidopleurus dredged by the 

 Scott Antarctic Expedition. 



Fam. Acmaeidae. [P. 62.] 



It is doubtful whether this name should be retained, as there is a prior 

 Acmea (" Hartmann Neue Alpin," i, 1820) and the two names seem to 

 conflict. I am, however, less concerned with regard to this debatable point 

 after examination of the type species of Acmaea Eschscholtz. This is a 

 west North American shell, and the Neozelanic shells are decidedly not 



