Ring- Necks and Allies. 129 



smaller than the male. When viewed from above, the beak of the 

 male is noticeably broader than that of the female. 



Mueller's Parrakeet (Tanygnathus muelleri). 



The beak of the male is slightly longer, more arched, and fuller 

 just before the commencement of the terminal hook when viewed 

 from above. 



The sexes of many of the species of Palceornis are distinguishable 

 by plumage alone, but in fully adult birds the sexual differences in 

 the form of the beak are always noticeable. The females are 

 generally smaller than the males. In the forms of Alexandrine 

 Parrakeets, in addition to their superior size, the males have a more 

 arched and slightly narrower beak than the females ; this last 

 character is especially noticeable just before the base of the terminal 

 hook. 



Cinghalese Alexandrine Parrakeet (Palwornis eupcttria). 



"The female lacks the black stripes on the neck and the rose 

 collar, and is slightly smaller than the male " (Seth-Smith, 

 Parrakeets, p. 97). 



Nepalese Alexandrine Parrakeet (Palceornis nepalensis). 



" The female lacks the black stripes and rose collar " (Seth- 

 Smith, I. c, p. 99). 



Indo-Burmese Alexandrine Parrakeet (Palasomis indoburmana). 



The female lacks the black mandibular stripes and rose collar, 

 according to Salvadori. 



Great-billed Alexandrine Parrakeet (Palwomis magnirostris). 



The female, as usual, " differs from the male, wanting the black 

 mandibular stripes and the red collar. Size rather smaller" 

 (Salvadori, Catalogue of Birds, vol. xx. p. 441). 



Mauritian Ring-necked Parrakeet (Palceornis eques). 



" Female. — Differs from the male in having no bluish tinge on 

 the occiput, no rose collar, and no black mandibular stripes, there 

 being only a trace of the latter of a dark green colour ; . . . bill 

 entirely dusky black. Dimensions as in the male, but the bill a 

 little smaller" (Salvadori, Catalogue of Birds, vol. xx. p. 443). 



Indian Ring-necked Parrakeet (Palceornis torquata). 



In fully adult birds the beak of the male is braoder at the base 

 and more regularly triangular when viewed from above than that 

 of the female. In a smaller and evidently young female in the 

 Museum the beak is more nearly of the male type. " Female. — » 



I 



