442 Mr. W. E. CJarke on the 



50. Chalcophaps inuica. 



Chalcophaps indica (L.) ; Sharpe^ Ibis^ 1890, p. 136 ; 

 Everett_, t. c. p. 194. 



No. 48. Juv. Dulit, 4500 feet, October. 



Fam. Phasianid^. 



51. LOBIOPHASIS BULWERI. 



Lobiophasis bulivein, Sharpe ; Everett, t. c. p. 198. 



Several specimens of this fine Pheasant from Mount Dulit. 

 Mr. Everett has also sent the egg, which is of a pale stone 

 colour, and measures, axis 1*5 inch, diara. \Q. 



XXXVII. — On the Rudimentary Hallux of the Kittiwake 

 (Rissa tridactyla). By W. Eagle Clarke, F.L.S. 



The literature relating to our knowledge of the rudimentary 

 hallux of the so-called three-toed birds is, I believe, not of a 

 very extensive nature. Nor has the hind toe of the species 

 under consideration received much attention. These facts 

 must be my excuse for placing the following slight notes on 

 record. 



It is scarcely necessary to remark that the genus Rissa 

 was founded by Leach mainly upon the rudimentary nature, 

 or absence, of the hallux. This toe appears to be a variable 

 quantity in the two species belonging to the genus, and is 

 most developed in the race of the common species which in- 

 habits the Pacific Region. This race has, mainly or entirely 

 on this account, been promoted to subspecific.rank by the 

 American ornithologists under the name of Rissa tridactyla 

 pollicaris. Even in this race, however, the development of 

 the hallux would appear to be a variable character. 



Regarding the status and appearance of the hind toe of 

 the Common Kittiwake {Rissa tridactyla) little need be said 

 here, since the published accounts of various ornithologists 

 are so well known and so readily accessible. 



The summer cruise, in 1891, of the yacht ' Shiantelle,^ 

 thanks to the kindness of my friend Mr. Harvie-Brown, 

 enabled me to obtain a series of embryos in various stages of 



