EEFEKENCE NOTES. 405 



19. Baird, "Am. Journ. Science," 1866 (xli), p. 340. 



20. Baird, "Am. Journ. Science,'' 1866 (xli), p. 346. 



21. Sharpe, "Catalogue of Birds," British Museum, ii, p. 238. 



22. Wallace, " Island Life," p. 296. 



23. Wallace, " Island Life," p. 253. 



24. Wallace, " Geographical Distribution of Animals," i, p. 32. The 

 occurrence was noted by Mr. Lowe, who communicated the facts to Sir 

 Charles Lyell. 



25. Wallace, "Geograph. Distrib.," i, p. 180. 



26. Wallace, "Geograph. Distrib.," ii, p. 13. 



27. Cones, "Key to North American Birds," p. 317. 



28. Gould, "Birds of Australia," ii, p. 1. 



29. " Ibis," 1884, p. 471. Two hundred sheep are said to have been 

 killed in a single night by a flock of these birds, at a station on Wanaka 

 Lake. 



30. " Proc. Zool. Soc," London, 1864, p. 456. 



31. Elwes, "Proc. Zool. Soc," 1873, p. 648. 



32. Forsyth Major, " Zoogeographische tjbergangsregionen," " Kosmos," 

 1884, p. 106. 



33. Forsyth Major, " Kosmos," 1884, p. 109. Forsyth Major is in error in 

 quoting from Bottger that twenty-seven out of the forty reptilian and am- 

 phibian species inhabiting Morocco are also found in Spain ; the number 

 stated is twenty-two (" AbhandJ. d. Senckenb. Naturf.-Gesellsch.,'' xiii, 1863, 

 p. 146). 



34. Cope, " Bull. T7. S. National Museum," 1875 ; Heilprin, " Proc. Acad. 

 Nat. Sciences," Philadelphia, 1882. 



35. Moseley, " ' Challenger ' Eeports," " Zoology," ii, pp. 188, 189. 



36. Wyville Thomson, " Depths of the Sea," p. 454. 



37. Lyman, " 'Challenger' Eeports," "Zoology," v, p. 327. 



38. A. Agassiz, " ' Challenger ' Reports," " Zoology," iii, p. 30. 



39. A. Agassiz, op. cii. 



40. Milne-Edwards, "Contes Eendus," December 17, 1883. 



41. Wyville Thomson, " Voyage of the ' Challenger,' " ii, p. 350. 



42. " Nature," March 20, 1884. 



43. Gunther, " Study of Fishes," p. 305. 



44. Wyville Thomson, " Voyage of the ' Challenger,' " ii, pp. 352, 353. 



45. "Annals and Magazine of Natural History," January, 1883; "Ver- 

 handl. d. k. k. geol. Eeichsanstalt," 1882, No. 4. 



46. " Nature," xxvi, p. 560. 



47. " Bull. Museum Comp. Zoology," Cambridge, vi, p. 153. 



48. "Nature," September 3, 1885. 



