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Show 1868.] DR. w. BAIRD ON THE GEPHYREA. Ill land, 1857 ; Diesing, Revis. Rhyng. p. 776, 1859 ; Quatrefages, Hist. Nat. Anneles, torn. ii. pt. 2. p. 593, 1865. Bonellia fabricii, Diesing, Syst. Helm. ii. p. 75, 1851. Hab. Greenland (Fabricius, Rudolphi, Rink). 4. ECHIURUS LUTKENII. Echiurus lutkenii, Diesing, Icon. Zoogr. Ferdinand. I. Imperator., Rev. der Rhyng. p. 777, 1859 ; Quatrefages, Hist. Nat. des Annele's, torn. ii. pt. 2. p. 593, 1865. Hab. Helleboek (Liitken). 5. ECHIURUS SITCHAENSIS. Thalassema no. 1, Mertens, MS. in I. c. infra. Echiurus sitchaensis, Brandt, Prod. Desc. Anim. a Mertensio obs. fasc. i. p. 62, 1835 ; Lamarck, An. s. Vert. 2nd edit. torn. iii. p.472, 1838 ; Diesing, Rev. der Rhyngod. p. 777 ; Quatrefages, I. c. p. 593, 1865. Hab. Sitka Sound (Mertens). 6. ECHIURUS CARAIBICUS. Echiurus caraibicus, Diesing, Icon. Zoogr. Ferdinand. I. Imperat., Rev. Rhyng. p. 777, 1859; Quatrefages, I. c. p. 594, 1865. Hab. West Indies (Suenson et Krebs, fide Diesing). 17. ECHIURUS CHRYSACANTHOPHORUS. Holothuria chrysacanthophora, Couthoy, fide Diesing. Echiurus chrysacanthophorus, Pourtales, Proc. Amer. Ass. Ad. Se v. Meet. 1851, p. 39; Diesing, l.c. p. 778, 1859; Quatrefages, Hist. Nat. Ann. torn. ii. part 2. p. 594, 1865. Hab. North-American Sea. ?8. ECHIURUS CHILENSIS. Echiurus chilensis, Max Miiller, Obs. Anat. de Verm, quibusd. Marit. p. 21, 1852 ; Diesing, Revis. I. c. p. 778, 1859; Quatrefages, l.c. p. 594, 1865. Hab. Coast of Chili. Fam. III. BONELLIDAE. Bonelliea, Lacaze, Quatrefages. Schizorhynchelidea (part.), Diesing. Genus 1. THALASSEMA. Thalassema, Gartner, Cuvier, Forbes, M.-Edwards, Farran, Quatrefages, Diesing. Lumbricus, sp., Pallas, Gmelin. Thalassina, Montagu. Ochetostomum, Leuckart et Riippell, Diesing. Holothuria, sp., Lesson. 1. THALASSEMA NEPTUNI. Thalassema neptuni, Gartner in lit., Pallas, Spic. Zool. torn. i. |