1880.] 



SPECIES OF ANATID^. 



513 



Two living examples of this rare Duck Avere received by the 

 Society from Mr Bljth in 1851. Mr. Bljth supposed that these 

 birds were from Tenasserim ; but it would appear that the species 

 IS not of ordinary occurrence in that country (c/. Hume & Davison, 

 Str f eath. vi. p. 489) Midler obtained several examples in Java 

 (bchl. Mus. d. P.-B. Atiseres, p. 64). 



Genus Stictonetta'. 



22. Stictonetta N^vosA (Gould). Freckled Duck. 

 Anas ncBvosa, Gould, B. Austr. vii. t. 10. 



Hab. Australia. 



Not yet received aUve. 



Genus Aix. 



23. Aix sponsa (Linn.). Summer Duck. 



Aix sponsa, Baird, B. N. Am. p. 785. 



Hab. North America. 



The Summer Duck occurs in the earliest list, and breeds with us 

 nearly every year, as will be seen by the following list :— 



1831. 

 1834. 



1835. 



Dates of Hatching of Summer Ducks. 



June 4th. 

 „ 17th. 

 May 1 2th. 

 June 3rd. 

 „ 17th. 

 6th. 

 „ 13t]i. 

 „ 18th. 

 5th. 

 5 th. 

 „ 7th. 

 May 18th. 

 1846. June 27th. 

 „ July 16th. 

 1848. May 29th. 



1852. June 19th. 



1853. May 29th. 



1854. June 11th. 

 1. „ 15th. 



1855. May 29th. 

 M July 1st. 



1837. 

 1839. 



1844. 



1857. May 31st. 

 „ June 21st. 



1858. May 31st. 

 ,, June 19th. 



1859. May 24th. 



1860. July 5th. 



1865. May 23rd. 

 ,, June 9th. 



1866. „ I8th. 



1867. „ 8th. 



1869. „ 18th. 



1870. May 26th. 



1871. June 1st. 



1873. May 31st, 



1874. June 2nd. 



1875. „ 16th. 



1876. July 1st. 



„ 10th. 



1877. June 5th. 



„ 21st. 



1878. „ 28th. 



24. Aix GALERicuLATA (Linn.). IMandarin Duck. 



Aix galericulata, Gould, B. Asia, pt. 4 (18,)2). 



Hub. China. 



The Mandarin was also an inhabitant of the Gardens in 1830, 



' Stictonetta, Eeichenb. Syst. Ar. p. ix. (1S62). 



