. Figs. 16-20. Tetrabothrius schaeferi from Blue Whale. 16, Cross-section of semi-gravid segment with eggs; 17, cross- section through longitudinal muscle; 18, cross-section of segment showing cirrus-sac and vagina; 19, cross-section showing cirrus-sac and everted cirrus; 20, egg. Table 1. Measurements of Tetrabothriids occurring in the Cetacea from the Discovery Collections Species Body Body Testis Egg Embryonic Embryo Lateral Central length width diameter shell diameter hooks hooks Tetrabothrius affinis 20 cm. 5 mm. 9°><53M 106 x 83/4 51 x66fj. 52 x 26/x 17/* 20/x T. wilsoni 14 c
. Figs. 16-20. Tetrabothrius schaeferi from Blue Whale. 16, Cross-section of semi-gravid segment with eggs; 17, cross- section through longitudinal muscle; 18, cross-section of segment showing cirrus-sac and vagina; 19, cross-section showing cirrus-sac and everted cirrus; 20, egg. Table 1. Measurements of Tetrabothriids occurring in the Cetacea from the Discovery Collections Species Body Body Testis Egg Embryonic Embryo Lateral Central length width diameter shell diameter hooks hooks Tetrabothrius affinis 20 cm. 5 mm. 9°><53M 106 x 83/4 51 x66fj. 52 x 26/x 17/* 20/x T. wilsoni 14 cm. 3 mm. 99 x 120/x 90 x 60/i 45X3°M 36X 21 /j. I2/z 12/z T. ruudi 9 cm. 2 mm. 42X45/X 40 x 50/i 30x30/* 17X 18/x — — T. schaeferi 14 cm. 3 mm. 90 x 9011 90x75,* 45x36/* 24x451* 1211 i8fi Trigonocotyle 21 cm. 3/2 mm. I20X 135^ 75x45/* 60 x 40/1 54X3°/x 18/n 12/i globicephalae Tr. prudhoei 14-5 cm. 1 mm. 120 x 6oti 60 x 84 fl 45 x 30/* 27 x 3011 9/* 6fJL Priapocephalus grandis 15 m. 24 cm. 12 mm. 68 x 60ft 99 x 66/1 33 x 50/* 17/* 17/*
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Keywords: ., bookcentury1900, booksubjectocean, booksubjectscientificexpediti
