YAR 589 



2. Einige Betrachtungen iiber den gegenwartigen Zustand der Natur- 

 geschichte Helvetiens, und insbesondere des Kantons Bern. Hopfn. 

 Mag. 1788, II. p. 2. 



WYTTENBACH (S.). 

 1. Bernisches Magazin ; vide sup. Pars I. p. 59. 



X. 



XAMARRO (J. B.). 



1. Conociraiento de las diez Aves menores de Jaula, su canto enfer- 

 medad, cura y orir. Madr. 1604, 4. fig Bohm. Bibl. II . 1 , p. 4-93. 



Y. 



YARRELL (W.). 



1. On the Change in the Plumage of some Hen-Pheasants. Phil. 

 Trans. CXVII. p. 268. Ann. Sc. n. 1828,XIII. p. 71 Feruss. Bull. 

 XV. p. 391 Isis, 1834-, X. p. 1011. 



2. On the Occurrence of some rare British Birds. Zool. Journ. II. 

 p. 24- ; III. pp. 85, 497. Feruss. Bull. 1828, XIV. p. 116. Isis, 

 1830, VIII. p. 830; XI. p. 1150. 



3. On the small Horny Appendage to the Upper Mandible in very 

 young Chickens. Zool. Journ. II. p. 4-33. Feruss. Bull. 1828, XIII. 

 p. 238. Isis, 1830, X. p. 1053. 



4. On the Occurrence of a species of Duck new to the British Fauna 

 (Anas rufina). Zool. Journ. II. p. 492. Feruss. Bull. XII. p. 129. 

 Isis, 1830, X. p. 1065. 



5. On the Anatomy of the British Birds of Prey. Zool. Journ. III. 

 p. 181. Feruss. Bull. 1828, XV. p. 152. 



6. On the Osteology of the Fennec (Canis cerdo). Zool. Journ. III. 

 p. 4-01 Feruss. Bull. 1828, XIV. p. 252. 



7. On the Osteology of the Chlamyphorus truncatus of Dr. Harlan. 

 Zool. Journ. III. p. 544 Feruss. Bull. XVII. p. 267. Isis, 1830, 

 IX. p. 926. Heusing. Zeitschr. III. p. 124-. 



8. On the supposed Identity of Whitebait and Shad. Zool. Journ. IV. 

 p. 137. Phil. Mag. ser. 2, VI. p. 253. Feruss. Bull. XVIII. p. 291. 

 Isis, 1830, XII. p. 1248. 



9. On the Tapir of America. Zool. Journ. IV. p. 210. Isis, 1830, 

 XII. p. 1257. 



10. On the Use of the Xiphoid Bone and its Muscles in the Cormorant 

 (Pelecanus carbo).Zoo\. Journ. IX. p. 234. Feruss. Bull. XIX. 

 p. 357. Isis, 1830, XII. p. 1258. 



