Family — S caphandridce . 
Cylichna arachis, Quoy and Gaimard. — Bulla arachis , 
Quoy and Gaimard, Zool. Astrolabe, II., 1833, p. 361, pi. 26, 
f. 28-30. King George’s Sound. 
Cylichna pygmaea, Adams. — Bulla pygmaea, A. Adams, Thes. 
Conch., II., 1850, p. 595, pi. 125, f. 150 ; Tate, Trans. Phil. Soc. 
Adelaide, II., 1879, p. 137. King George’s Sound. 
Retusa apicina, Gould. — Tornatina apicina, Gould, Proc. Bost. 
Soc. Nat. Hist., VII., 1859, p. 129 ; Urticulus avenarius, Watson, 
Zool. Chall. XV., 1886, p. 658, pi. 49, f. 5 ; T. fusiformis , Verco. 
Trans. Roy. Soc., S.A., XXXVI., 1912, p. 204. Geraldton. 
Retusa apiculata, Tate. Utriculus apiculata, Tate, Trans. 
Phil. Soc., Adelaide, II., 1879, p. 138, pi. 5, f. 3. King George’s 
Sound. 
Family — Bullidce. 
Bull aria australis, Gray. — Bulla australis , Gray, Ann. Philos. 
7X., 1825, p. 408 ; Quoy and Gaim., Zool. Astrolabe, II., 1833, 
p. 357, pi. 26, f. 38, 39. King George’s Sound ; Verco, Trans. Roy. 
Soc. S.A., XXXVI., 1912, p. 204. Geraldton. 
Bullaria columellaris, Menke, Bulla, Malak. Blatt., 1854, 
p. 26. Iredale, Proc. Zool. Soc. 1914, p. 667. Monte Bello Island. 
Bullaria quoyi, Gray. — Bulla quoyi, Gray, Dieffenbach’s, New 
Zealand, II., 1843, p. 243 ; Smith, Zool. Erebus and Terror, 1874, 
p. 5, pi. 1, f. 11 ; B. striata , Menke, Moll, Nov. Holl., 1843, p. 5. 
Woodman’s Point. 
Bullaria tenuissima, Sowerby. — Bulla tenuissima , Sowerby, 
Conch. Icon., XVI., 1868, pi. 2, f. 4. Swan River. 
Hamincea brevis, Quoy and Gaimard. — Bulla brevis , Quoy 
and Gaimard, Zool. Astrolabe II., 1833, p. 358, pi. 26, f. 36, 37, 
King George’s Sound.; B. ovoidea , Menke, Moll. Nov. Holl., 
1843, p. 6. Fremantle. 
Hamincea ambigua, A. Adams. — Bulla ambigua, A. Adams, 
Thes. Conch., II. , 1850, p. 582, pi. 124, f. 97. King George’s Sound. 
Akera bicincta, Quoy and Gaimard. — Bulla bicincta , Quoy 
and Gaimard, Zool. Astrolabe, II., 1833, p. 355, pi. 26, f. 31, 32. 
King George’s Sound. 
Family — A plustridce . 
Hydatina physis, Linne. — Bulla physis, Linn, Syst. Nat. X., 
1758, p. 727 ; Pilsbry, Man. Conch. XV., 1893, p. 387, pi. 45, 
f. 14-17 ; Verco, Trans. Roy. Soc., S.A., XXXVI., 1912, p. 204. 
Geraldton. 
Family — A plysiliidce . 
Tethys gigantea, Sowerby. — Aplysia gigantea, Sowerby. 
Conch. Icon., XVII., 1869, p. 1, f. 1. Swan River. 
