Observations on some Tasmanian fishes: Part XXIII

CARCHARHINIDAE. Carcharhinus greyi greyi, second recorded specimen from Tasmania (first recorded as C. brachyurus); head in plan, mouth parabolic curves, orthogonal polynomials fitted; girth of head an exponential function of length from snout tip; notes on dentition, coloration; key to Tasmanian carcharhinids.<br>SPHYRNIDAE. Sphyrna zygaena, second recorded Tasmanian example, female, compared with first, male; logarithmic lengths to seven morphological landmarks yield a linear graph when plotted on logarithms of seven natural numbers (similar formulations in other sharks).<br>SYNGNATHIDAE. Syngnathus phillipi, study of two samples (meristic and morphometric data, variation within and between samples, supposed sexual dimorphism, pouch, coloration, depth range): Syngnathus caretta (apparently known only from type-specimens) reported from Tasmania; current knowledge of species extended: IchthyocaIlzpus runa noted as a Tasmanian species: Syngnathus poecilolaemus, metrical data. LAMPRIDAE. Lampris regius, new and old local records. SCORPIDAE. Scorpis aequipinnis, morphometry and coloration in a juvenile sample; comparison with adult material, yielding data on regional relative growth. LEPTOSCOPIDAE. Crapatalus arenarius, new subspecies described and figured. TRIPTERYGIIDAE. General review of Tasmanian representatives, with key; Tripterygium clarkei (later placed in Gillias and Norfolkia) here referred to Helcogramma: specimen noted in R.M. Johnston's memoranda, identified as T. clarkei by Whitley, now described as a new species: Gillias macleayana, new material, table of dimensions: two new species of Forsterygion (New Zealand genus new to Australia) described and figured: Brachynectes fasciatus retained in that genus; size classes. ECHENEIDAE. Remora remora, observations on two Tasmanian examples (host, Luth); outline of disc fitted with second degree polynomial; lengths of transverse ridges of disc an exponential function of their serial numbers; unusual white markings in one specimen. SYNANCEJIDAE. Glyptauchen insidiator mirandus, habits; first detailed account of the subspecies; length-number patterns of spines and rays; taxonomic status discussed.