. Alaska. Natural history -- Alaska; Scientific expeditions; Alaska. ENCHYTR^ID^ 55 MESENCHYTR^US PEDATUS sp. nov. (p1. I, figs. 13 and 14 ; pi. ix, figs. 3-6 ; text-figs. 29 and 30.) Definition.—Length 10 mm., width .75 mm. Somites 48. Setae sigmoid ; laterals 3-4, ventrals 5-6. Head-pore small, opening half- way between apex of prostomium and peristomium. Clitellum, dorsally \ XI—XIII, ventrally XII, XIII. A very large exterior copulatory organ, almost as long as the diameter of the bod}-. Brain anteriorly CI. Fig. 29. MesenchytrcEus pcdatus. slightly concave, posteriorly with straight margi
. Alaska. Natural history -- Alaska; Scientific expeditions; Alaska. ENCHYTR^ID^ 55 MESENCHYTR^US PEDATUS sp. nov. (p1. I, figs. 13 and 14 ; pi. ix, figs. 3-6 ; text-figs. 29 and 30.) Definition.—Length 10 mm., width .75 mm. Somites 48. Setae sigmoid ; laterals 3-4, ventrals 5-6. Head-pore small, opening half- way between apex of prostomium and peristomium. Clitellum, dorsally \ XI—XIII, ventrally XII, XIII. A very large exterior copulatory organ, almost as long as the diameter of the bod}-. Brain anteriorly CI. Fig. 29. MesenchytrcEus pcdatus. slightly concave, posteriorly with straight margin, a trifle longer than broad. Septal glands in IV, V and VI. Spermathecae each with two club-shaped diverticles situated halfway up the organ. Sperm-funnels two-thirds as long and broad as a somite. Sperm-ducts at least eight times as long as the sperm-funnel. Sperm-ducts with an atrial chamber before the penial pore. A ring of very large accessory glands open in the immediate vicinity of the sperm-ducts. Dorsal vessel originates in XIV. Nephridia with three somewhat indistinct lobes and a helix- like posterior spur. Lymphocytes of two forms, oblong and Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Harriman Alaska Expedition (1899); Washington Academy of Sciences (Washington, D. C. ); Harriman, Edward Henry, 1848-1909; Merriam, C. Hart (Clinton Hart), 1855-1942. New York, Doubleday, Page & company
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Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyo, bookyear1901
