18G8.] DR. W. BAIRD ON THE GEPHYREA. 109 



t. 11. f. 10-14; Eysenhardt, Isis, 1818; ib. xii. p. 2086, t. 26. 

 f. 1, 2 ; Schweigger, Haudb. der Naturgesch. der ungeglied. Thiere, 

 p. 593, 1820 ; Martens, Fauna Veneta, in Reise nach Venedig, 

 Theil ii. p. 486, 1824. 



Sternaspis thalassemoldes. Otto, Epist. gratulator. Vratislav. 

 1820*, and in Nov. Act. Nat. Cur. t. x. pp. 619-27, t. 50. f. 1-5, 

 1821 ; Blainville, Diet, des Sc. Nat. art. Vers, p. 500, Atlas, t. 26. 

 f. 1, la-Id, 1828 ; Delia Cliiaje, Mem. Stor. e Notom. degli Animali 

 del Reg. Napol. vol. iv. t. 62. f. 18, and (descript. of plate) p. 204, 

 1829 ; Cuvier, Regn. Animal, tom. iii. p. 245, 1830 ; Guerin, Icon, 

 du Regn. An. Zoophytes, t. 6. f. 4 ; Cuvier, R. A. edit. Griffith, 

 vol. xii. p. 456, t. (Zoophytes) 1. f. 3, copied from Guerin, 1834 ; 

 Guv. R. A. edit. Crochard, Echinod. p. 45, t. (Zoophytes) 22. f. 3, 

 ? 1837 ; Lamarck, An. s. Vert. v. p. 535, 1838; Krohn, Miill. Archiv 

 fiir Anat. 1842, p. 426 ; Max Midler, Obs. Anat. de Verm, qui- 

 busd. Marin, p. 1, tab. 1* (quoted by Quatrefages), 1852 ; Quatre- 

 fages. Hist. Nat. des Annele's, tom. ii. p. 391, 1865. 



Sternaspis scutata, Malmgren, Annulat. polychtet. Spitsberg. &c. 

 p. 85, 1867. 



Hub. Mediterranean and Adriatic seas. B.M. 



2. Sternaspis fossor, Stimpson. 



3. Sternaspis affinis, Stimpson. 



Sternaspis affinis, Proceed. Acad. Nat. Sc. Philadelphia, 1864, 

 p. 159. 

 Hab. Puget Sound (Stimpson). 



4. Sternaspis assimilis. 



Sternaspis assimilis, Malmgren, I. c, p. 87, 1867. 

 Hab. West coast of France. 



5. Sternaspis islandica, 



Sternaspis islandica, Malmgren, I. c, p. 87, t. 14. f. 85. 

 Hab. Iceland. 



Family II. Echiurid^. 



Echiurea, Quatrefages. 

 Schizorhynchelidea (part.), Diesing. 

 ThalassemcB (part.), Cuvier. 

 Thalassamacece (part.), Forbes & Goodsir. 

 Thalassemata (part.), Brandt. 



Genus Echiurus. 



Lumbricus, sp., Pallas, Fabricius, Gmelin. 



Thalassema, Cuvier, Lamarck, Bosc, Blainville, Leach, Savigny, 

 M. Edwards. 



Echiurus, Cuvier, Regn. Animal, 2nd edit. tom. iii. p. 244 ; Gue'rin, 

 Forbes, Brandt, Quatrefages, Diesing. 



1. Echiurus vulgaris. 



Lumbricus echiurus, Pallas, Spicil. Zool. fasc. x. p. 5, t. 1. 



* Works not seen by me. 



