1868.] DR. W. BAIRD ON THE GKPH\REA. Ill 



land, 1857 ; Diesing, Revis. Rhyng. p. 776, 1859 ; Quatrefages, Hist. 

 Nat. Auneles, torn. ii. pt. 2. p. 593, 1865. 



Bonellia fabricii, Diesiug, 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 (JLiitken). 



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, /. 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). 



1 7 . Echiurus chrysacanthophorus. 



Holothuria chrysacanthophora, Couthoy, y?</e Diesing. 



Echiurus chrysacanthoj)horus, Pourtales, Proc. Amer. Ass. Ad. 

 Sc. v. Meet. 1851, p. 39; Diesing, I.e. p. 77S, 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, quibnsd. 

 Marit. p. 21, 1852 ; Diesing, Revis. I. c. p. 778, 1859; Quatrefages, 

 I.e. p. 594, 1865. 



Hab. Coast of Chili. 



Fam. III. BoNELLIDiE. 



Bonelliea, Lacaze, Quatrefages. 

 Schizorhynchelidea (part.), Diesing. 



Genus 1. Thalassema. 



Thalassema, Gartner, Cuvier, Forbes, M. -Edwards, Farran, 

 Quatrefages, Diesing. 



Lumbricus, sp., Pallas, Gmelin. 

 Thalassina, Montagu. 



Ochetosfomum, Leuckart et Riippell, Diesing. 

 Holothuria, sp., Lesson. 



1. Thalassema neptuni. 



Thalassema neptuni, Giirtner in lit., Pallas, Spic. Zool. torn. i. 



