104 MR. OLDFIELD THOMAS ON MAMMALS [Feb. 18, 



this 1-esult as the experiment was very small and the young birds 

 were killed before they reached maturity. In the Barb-Fantail- 

 Nun crosses red, yellow, black, and mixed red and black wattles 

 were obtained. The yellows might possibly have changed to red. 

 No flesh-coloured wattles were recorded. The two Nun-Fantails, 

 however, had flesh-coloured wattles. In the Tumbler- Fantail 

 experiment the wattles were flesh-coloured throughout. 



Owing to the various changes occurring in this character during 

 the life of an individual, it is by no means a satisfactory subject 

 for experiment. 



Conclusion. 



The experiments here recorded have been subsidised by the 

 Government Grant Committee of the Royal Society. The writer 

 is indebted to Mr. J. H. Elwell for much kind assistance. 



The matings, throughout, have been made in consultation with 

 Mr. Bateson, who has most kindly supervised the experiments. 

 He has also read the manuscript for the present I'eport, and made 

 many very valuable suggestions and alterations. To him the 

 writer desires to express his sincere thanks. 



EXPLANATION OF THE PLATES. 



Black Barl-Wliite Fantail experiment. 

 Plate IV. Fig. 1. Black with some white featheis. 



Fig. 2. White with black patch. (Exp. 5.) 

 Plate V. Fig. 1. Reversionary blue. 



Fig. 2. Reversionary blue, dark type. (Exp. 5.) 

 Plate VI. Fig. 1. Blue with some white feathers. 



White Ttcmbler-lFhite Fantail experiment. 

 Plate VI. Fig. 2. White with few coloured feathers (black). 

 Plate VII. Fig. 1. White with few coloured feathers (red). 

 Fig. 2. Tricolor. 



2. The Duke of Bedford's Zoological Exploration in Eastern 

 Asia. — IX. List of Mammals from the Mongolian 

 Plateau. By Oldfield Thomas, F.R.S., F.Z.S. 



[Received January 21, 1908.] 



After making the collection in the Shantung Peninsula re- 

 ferred to in a previous part of the present series, Mr. Malcolm 

 Anderson made a trip to the Mongolian Plateau, reaching a point 

 about 100 miles N.W. of Kalgan, and collected there the series 

 now enumerated. 



The fauna of this region, as was pointed out by Pere David, is 

 exceedingly poor, and Mr. Anderson was in consequence only able 

 to get nine species, but these are all of interest, and form a 

 valuable nucleus for further work in Northern China. Most of 



