ISURIDAE. Isurus oxyrinchus figured; exhibits one feature 1966; comparison with nominal parison with other species). ABSTRACT Rafinesque, 1810: Tasmanian example described and stated to be diagnostic of I. paucus Guitart Manday, species; some aspects of body form specified (some com- MELANOSTOMATIADAE. Echiostoma barbatum Lowe, 1843: first Australian report of species; Tasmanian specimen from alimentary canal of Hyperoglyphe porosa (Richardson, 1845), general description; also noted, two Australian Museum examples from New South Wales and Queensland or New South Wales. GONORHYNCHIDAE. Gonorhynchus greyi (Richardson, 1845): general observations; location of paired and of unpaired fins at integral nodes along anteroposterior axis of fish in a loglog plot. ANTENNARIIDAE. Echinophyrne crassispina McCulloch & Waite, 1918: first Tasmanian record; general observations; some aspects of body form specified : key to Tasmanian species. CARAPIDAE. Carapus homei (Richardson, 1846): Tasmanian status doubtful. Carapus rendahli Whitley, 1941: first satisfactory Tasmanian record; specimen described : key to reported Tasmanian species. PLESIOPIDAE. Trachinops caudimaculatus M'Coy, 1890: Tasmanian status doubtful. Trachinops rodwayi (Johnston, 1902): a local Trachinops described and figured; referred to Johnston's species, hitherto unrecognized since its description and hitherto treated as synonymic with M'Coy's Victorian species : key to reported Tasmanian species. APOGONIDAE. Gronovichthys lemprieri (Johnston, 1883): generic status; observations on new material; scaly para-anal sheath reported; some aspects of growth and form examined. CENTROLOPHIDAE. Schedophilus huttoni (Waite, 1910): first Tasmanian record (some earlier reports apparently based on (incorrect) synonymization with Tubbia tasmanica Whitley, 1943); general account of specimen, including aspects of body form. Coroplopus dicologlossops Smith, 1966, from South Africa, considered a synonym of Waite's species. OSTRACIONTIDAE. Lactoria diaphana (Bloch & Schneider, 1801): second reported Tasmanian example; specimen described; some aspects of body form specified (some comparative data from undetermined Queensland species).