. Report on the scientific results of the voyage of Challenger during the years 1873-76 : under the command of Captain George S. Nares, , and Captain Frank Turle Thomson, late, outer side view ; natural size. Fig. 3. Oxydiact with central thickening and barlis at both ends ; x 300. Figs. 4-6. Small amphidiscs of difierent sizes ; x 300. Fig. 7. Great amphidisc with knobbed axial beam ; x 300. Figs. 8, 9. Middle-sized amphidiscs ; x 300. Fig. 10. Oxyhexact with bent echinated rays ; x 300. Figs. 11, 12. Autodermal pentact pinules ; x 300. Fig. 13. Oxyhexact with straight
. Report on the scientific results of the voyage of Challenger during the years 1873-76 : under the command of Captain George S. Nares, , and Captain Frank Turle Thomson, late, outer side view ; natural size. Fig. 3. Oxydiact with central thickening and barlis at both ends ; x 300. Figs. 4-6. Small amphidiscs of difierent sizes ; x 300. Fig. 7. Great amphidisc with knobbed axial beam ; x 300. Figs. 8, 9. Middle-sized amphidiscs ; x 300. Fig. 10. Oxyhexact with bent echinated rays ; x 300. Figs. 11, 12. Autodermal pentact pinules ; x 300. Fig. 13. Oxyhexact with straight echinated rays ; x 300. Figs. 14-23. Hyalonema gracile, F. E. R, . 196 Fig. 14. Longitudinal section of a somewhat damaged specimen, preserved inalcohol; natural size. Figs. 15-17. Small amphidiscs of diSerent sizes ; x 300. Fig. 18. Principal triact with rough ends; x 300. Fig. 19. Greater amphidisc with echinated axial beam ; x 300. Fig. 20. Oxyhexact with straight, smooth rays ; x 300. Fig. 21. Autodermal pentact pinulus ; x 300. Fig. 22. Autogastral pentact pinulus ; x 300. Fig. 23. Oxyhexact with smooth bent rays ; x 300. The Voyage of ,S.„Challenger. HexactinelMa. Litll Ans; v-V/emet A VTintet rraniimi W Fig. 1-13, HYALONEMA SIEBOLDI. J , Fig,14-23, HYALONEMA GRACILE. FE,Schulze, PLATE XXVIIi. PLATE XXVIII. PAGE Figs. 1-11. Hyalonema diver gens, F. E. S., . 199 Fig. 1. Somewhat damaged specimen, preserved in alcohol; natural size. Fig. 2. Marginal oxydiact with four central knobs ; x 100. Fig. 3. Great amphidise of the dermal membrane ; x 300. Figs. 4, 5. Smaller amphidiscs ; x 300. Fig. 6. Oxyhexact with smooth bent rays ; x 300. Fig. 7. Autodermal pentact pinulus ; x 100. Fig. 8. Oxyhexact with smooth straight rays ; x 300. Fig. 9. Oxyhexact with smooth bent rays ; x 300. Figs. 10, 11. Strong short spicules, triact and tetract, with rough ends, from thebasal pad of the body ; x 100. Figs. 12-17. Hyalonona lusitanicum, Bocage, . 225 Fig. 12. Small
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectscienti, bookyear1887
