. Annual report. New York State Museum; Science; Science. GRAPTOLITES OF NEW YORK, PART 2 307 5, sec. 4. v. 3, pt 2. 1: 339 1889. 9: 184 Dicellograptus sextans Lapworth. Ann. & Mag. Nat. Hist. Ser. 5. 1880. 6:19 Dicranograptus sextans Walcott. Alb. Inst. Trans, v. 10. 1883. (Advance sheet 1879. ) Dicellograptus cf. sextans Tullberg. Sver. Geol. Unders. Ser. C, no. 50. 1882. p. 20 Dicellograptus sextans Lapworth. Roy. Soc. Can. Trans, v Dicellograptus sextans Ami. Can. Geol. Sur. Rep't. Ser. 2, Dicellograptus sextans Walcott. Geol. Soc. Am. Bui. 1890. Dicellograptus sextans
. Annual report. New York State Museum; Science; Science. GRAPTOLITES OF NEW YORK, PART 2 307 5, sec. 4. v. 3, pt 2. 1: 339 1889. 9: 184 Dicellograptus sextans Lapworth. Ann. & Mag. Nat. Hist. Ser. 5. 1880. 6:19 Dicranograptus sextans Walcott. Alb. Inst. Trans, v. 10. 1883. (Advance sheet 1879. ) Dicellograptus cf. sextans Tullberg. Sver. Geol. Unders. Ser. C, no. 50. 1882. p. 20 Dicellograptus sextans Lapworth. Roy. Soc. Can. Trans, v Dicellograptus sextans Ami. Can. Geol. Sur. Rep't. Ser. 2, Dicellograptus sextans Walcott. Geol. Soc. Am. Bui. 1890. Dicellograptus sextans Gurley. Jour. Geol. 1896. 4:297 Dicellograptus sextans ? T. S. Hall. Roy. Soc. Victoria. Proc. 1896 Dicranograptus (Dicellograptus) sextans Roemer & Freeh. Lethaea Pal. 1897. 1:621 Dicellograptus sextans Geol. Mag. n. s. Dec. 4, v. 6. 1899. Dicellograptus sextans Ruedemann. N. Y. State Mus. Bui. 42. 1901. Dicellograptus sextans Clark. Geol. Mag. Ser. 4. 1902. 9:498 Dicellograptus sextans Fearnsides. Section C. Belfast 1902. Separates, p. 1 Dicranograptus sextans Richardson. Terranes of Orange Co., Vt. 1902. Dicellograptus sextans Elles & Wood. Monogr. Brit. Grapt. pt 4. 1904. p. 153; pi. 21, fig. ia-e Dicellograptus sextans Dale. U. S. Geol. Sur. Bui. 242. 1904. Dicellograptus sextans Ami. Geol. Sur. Can. Sum. Rep't. 1905. p. 12 Description. Branches of rhabdosome diverg- ing at 300°, with acute axil; straight in shorter specimens and gently curved in longer ones, some- times with the ventral side as the concave one, but more frequently with a convex ventral side thereby approaching the shape of the handles of a pair of pliers ; mostly about 10 mm long, rarely surpassing 20 mm; usually of uniform width [see " Remarks"], which is .8 mm. Sicular extremity broad, slightly rounded, with short virgella and two lateral spines. Sicula inconspicuous (.9 mm long). Nema short and thin. Thecae numbering 11 to 13 in 10 mm, short (1 mm), o
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