-- 139. _Sylvia plumbea._ This bird greatly resembles the female of _S. pusilla_ of Wilson (yellow-backed Warbler, Latham), yet differs in having the belly golden yellow instead of white: I was told, moreover, that this was a male bird: the one inhabits North, and the other South America. Latham's description of his yellow-backed Warbler, I should think, is not quite accurate; as he only alludes to one white bar on the wing covers, whereas both Wilson and Vieillot say there are two. -- 145. Eburna tessellata. Add to the Syn. _E. Arcolata_, _Lam. Syst._ 7. _p._ 282. 4. -- 146. Eburna Pacifica. Add to the Syn. _E. lutosa?_ _Lam. Syst._ 7. 282. 5. -- 150. The upper figure is of _Sphinx Leachii_, and the under of _S. fasciata_. -- 152. Add to the Syn. _Helix regina._ _Ferussac Moll._ _liv._ 19. _pl._ 119. -- 153. Ditto _S. bituberculatus_, _Lam. Syst._ 7. _p._ 202. 6. -- 157. Amp. Effusa. Ditto, _Lam. Syst._ 6. 2. _p._ 178. 5. -- 164. Add to the Syn. _Le Figuier Tcheric_, _Le Vaill. Ois. d'Af._ 3. _pl._ 132. -- 166. Ditto _Lam. Syst._ 6. 2. _p._ 178. 5. -- 170. Ditto _Le Vaill. Ois. d'Af._ 3. _pl._ 112. _f._ 2. -- 177. Ditto _Pyrula Spirillus._ _Lam. Syst._ 7. _p._ 142. * * * * * NOTES [1] "Pendant que les naturalistes font des monographies, des ouvrages generaux ou la synonymie, les coupes systematiques sont, a force de temps et de soins, etablies avec rigueur, les auteurs des miscellanees, avec quelques phrases et des noms nouveaux, font des genres ou des especes, et publient 50 cahiers dans lesquels les fruits de dix ans de recherches ou de voyages sont enleves a leurs auteurs. (F.)"--_Bulletin des Annonces et des Nouvelles Scientifiques; publie sous la direction de M. le B. de Ferussac. N._ 4. _p._ 53. [2] See the Sketch Book of G. Crayon, vol. i. p. 130. [3] Bulletin des Annonces et des Nouvelles Scientifiques, N. 6. p. 438. [4] Donovan's Naturalist's Repository. [5] The additional list of synonyms subjoined at the end of this volume almost entirely refer to one or two books which have been subsequently published: the date of 1822, affixed to the seventh volume of Lamarck's _H. N. des Animaux sans Vertebres_, is considerably before the time it was issued to the public. [6] I have applied this term to the oblique descent made by the umbo, towards the basal extremity of the anterior side of bivalves.