. 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, I PLATE VHf. Diam. X 30 X 1500 X 30 X 30 PLATE VIII. Figures 1-6.—Leucetta hceckeliana, u. sp. Fig. 1. Portion of a horizontal section, Fig. 2. Portion of a section through the cortical layer, showing some mesoderniic cells and one spermospore,Fig. 3. A cortical triradiate spicule,Fig. 4. A cortical quadriradiate spicule (from the top), .Fig. 5. A regular minute quadriradiate spicule (n, from the top,
. 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, I PLATE VHf. Diam. X 30 X 1500 X 30 X 30 PLATE VIII. Figures 1-6.—Leucetta hceckeliana, u. sp. Fig. 1. Portion of a horizontal section, Fig. 2. Portion of a section through the cortical layer, showing some mesoderniic cells and one spermospore,Fig. 3. A cortical triradiate spicule,Fig. 4. A cortical quadriradiate spicule (from the top), .Fig. 5. A regular minute quadriradiate spicule (n, from the top, . h, profile view), . . x 400 Fig. 6. A sagittal minute quadriradiate spicule (a, from the top, b, profile view), . . x 400 „ 7-10.—Leucetta vera, n. sp. Fig. 7. Portion of a horizontal section, . x 30Fig. 8. Portion of a section through the parenchyma near the inner surface, showing large, coarse-grained, pavement cells, . x .300 Fig. 9. A cortical triradiate spicule, . x 30 Fig. 10. A cortical quadriradiate spicule (from the top), . x 30 The Voyage ofH Cal .!\m. HaeckeUan. PLATE IX. chall. bxp.—paet xxiv.—1883.)—Aa, PLATE IX. Figures l-lo.—Eilhardia schulzei, n. yen. and T Diam. Fig. ] Fig. 2 Fig. 3 Fig. 4 Fig. 5 Fig. 6. Fig. 7. Fig. 8. Fig. 9. Fig. 10. Portion of a vertical section, One half of an osculum (from within), Portion of the sieve-like surface, Two parenchymal triradiate spicules ; (b, embryonal),(a) A triradiate spicule of the sieve-like surface,(l>, <?) Two triradiate spicules of the convex surface,(d) An oscular quadriradiate spicule,Three oscular triradiate spicules,Two .slender acerate spicules of the convex surface,Five stout acerate spicules of the convex surfaceembryonal), ....9. Two acerate spicules of the osculum, . Minute acerate spicules of the sieve-like surface, . (d, X 30 X 75 X 120 X 100 X 50 X 50 X 50 X 200 X 100 X 100 X 100 X 300
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectscienti, bookyear1883
