. Annual report . ed to the fourth order. x2 4 Idem in natural size 6 Mature rhabdosome in the usual confused state of preservation 7 About half of mature rhabdosome with the branches less confused 8 Restoration of a mature rhabdosome in spreading condition y Mature rhabdosome laterally compressed, retaining a proximal, apparentlybaglike appendageGraptolite bed 2 of the Deep kill section Goniograptus geometricus sp. nov. Page 627 5 Half of young rhabdosome 10 Young rhabdosome 11 Young rhabdosome with branches of the third order 12 Young rhabdosome in a similar stage of development. x2 13 Half
. Annual report . ed to the fourth order. x2 4 Idem in natural size 6 Mature rhabdosome in the usual confused state of preservation 7 About half of mature rhabdosome with the branches less confused 8 Restoration of a mature rhabdosome in spreading condition y Mature rhabdosome laterally compressed, retaining a proximal, apparentlybaglike appendageGraptolite bed 2 of the Deep kill section Goniograptus geometricus sp. nov. Page 627 5 Half of young rhabdosome 10 Young rhabdosome 11 Young rhabdosome with branches of the third order 12 Young rhabdosome in a similar stage of development. x2 13 Half of a young rhabdosome showing the points of origin of the denti- culate branches. x2 14 Similar fragment with longer denticulate branches. x2 15 A principal stem and branches of a mature rhabdosome 16 Half grown rhabdosome showing the four principal stems 17 Two main stems with the lateral branches, the latter showing the angles of divergence in imdistorted condition ORAPTOLITKS Memoir 7. State Museum. Plate 7. G SB del GRAPTOLITES OF NEW YORK. PART 1 761 18 Fragment of mature rhabdosome showing the length attained by the branches 19 Principal stem with branches, enlarged to show the composition of the stem internodes of one theca each. x2 20 Restoration of a mature rhabdosome in undistorted condition (xraptolite bed 3 of the Deep kill section 762 NEW YORK STATE MUSEUM PLATE 8 Genus dichograptus SalterDichograptus octobrachiatus Hall (sp.) Page 634 See pi. 9 1 Young rhabdosome 2, 3 Rhabdosomes retaining the central disk 4 Mature rhabdosome 5 Fragment with central disk, showing the growth lines of the latter 6 Rhabdosome in hexad stage of reduction 7 Specimen still retaining a bifurcation of the fourth order. x2 All originals are from graptolite bed 2 of the Deep kill section withthe exception of that of figure tf, which is from graptolite bed 7. OIIAPTOLITKS Memoir 7. State Museum Plate 8
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