424 Transactions. 



Suborder Chitonina. 



Fam. Lepidochitonidae Iredale. 

 Genus Callochiton Gray, 1847. 



Subgenus Icoplax Thiele, 1893. Icoplax Thiele, Das Gebiss d. 

 Schnecken, vol. ii, p. 392, 1893. Type : Chiton puniceus 

 Gould. 

 Callochiton puniceus (Gould, 1846). Synonyms: Chiton illu- 

 minatus Reeve, 1847 ; C. dimorphus Rochebrune, 1889. 



sulculatus Suter, 1907. 



empleurus (Hutton, 1872). 



- platessa (Gould, 1846). Synonyms : Chiton crocinus 

 Reeve, 1847 ; C. versicolor Angas, 1852. 

 Genus Eudoxochiton Shuttleworth, 1853. 

 Exidoxochiton nobilis (Gray, 1843). 



huttoni Pilsbry, 1893. 



Fam. Plaxiphoridae Iredale. 



Genus Plaxiphora Gray, 1847. 



Subgenus Plaxiphora s. str. 



Plaxiphora aurata (Spalowsky, 1795). Chiton auratus Spa- 

 lowsky, Prodr. Syst. Hist. Test., p. 88, pi. 13, figs. 6a, 66, 

 1795, ' " Tahiti" = Falkland Islands. Synonyms : Chiton 

 carmichaelis Wood, Index Test. Supp., pi. 1, fig. 10, 1828, 

 "Cape of Good Hope" = South America; C. setiger 

 King, Zool. Journ., vol. v, p. 358, 1831, South America; 

 Plaxifora campbelli Filhol, Comptes Rendus Sci. Paris, 

 vol. xci, p. 1095, 1880, Campbell Island ; Choetopleura 

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

 vol. v, p. 119, 1881, Straits of Magellan; C. hahni, id. ib., 

 vol. viii, p. 34, 1884, Patagonia; C. frigida, id., Miss. 

 Sci. Cap Horn, vol. vi, Moll., p. 137, 1889, Patagonia; 

 Plaxiphora superba Pilsbry, Man. Conch., vol. xiv, p. 319, 

 1893, New Zealand; P. subatrata Suter, Proc. Mai. Soc, 

 vol. ii, p. 188, 1897, New Zealand ; P. aucklandica, id., 

 Subant. Isds., N.Z., vol. i, Moll., p. 2, 1909, New Zealand. 



Subgenus Diaphoroplax Iredale, 1914. Diaphoroplax Iredale, 

 Proc. Mai. Soc. (Lond.), vol. xi, p. 32, 1914. Type: 

 Chiton biramosus Quoy and Gaimard. 

 Plaxiphora biramosa (Quoy and Gaimard, 1835). Synonym : 

 Tonicia corticata Hutton, 1872. 



Subgenus Maorichiton Iredale. 1914. Maorichiton Iredale, Proc. 

 Mai. Soc. (Lond.), vol. xi, p. 32, 1914. Type : Chiton 

 caelatus Reeve. 

 Plaxiphora caelata (Reeve, 1847). Synonym : Chiton ter- 

 minalis E. A. Smith, 1874. 



zigzag (Hutton, 1872). 



murdochi Suter, 1905. 



schauinslandi Thiele, 1909. Synonym: Plaxiphora glauca 



Suter, 1905 (not Quoy, 1835). 



Subgenus Frembleya H. Adams, 1866. Frembleya H. Adams, 

 Proc. Zool. Soc. (Lond.), 1866, p. 445. Type : F. egregia 

 H. Adams. 

 Plaxiphora egregia (H. Adams, 1866). Synonym : Acantho- 

 chaetes ovatus Hutton, 1872. 



