16 BIRDS OF TENASSERIM. 



series of both sexes, which, I may remark, differ very little 

 in size : — 



Males. — Length, 23 to 25 ; expanse, 50-5 to 54 ; tail from 

 vent, 10 to 11-5 ; wing, 15'8to 17 ; tarsus, 3*5 to 3*62 ; billfrom 

 gape, 1-75 to 2'0 ; weight, 2*0 to 2 -4 lbs. 



Females. — Length, 24'5 to 28 ; expanse, 52 to 56-37 ; tail, 10-5 

 to 12 ; wing, 15*25 to 18 ; tarsus, 3'5 to 362 ; bill from gape, 

 1*75 to 2-0 ; weight, 17 to 2'5 lbs. (only 2 weighed), 

 i In the adult the bill is plumbeous blue, shaded with brown 

 at the tip of the upper mandible ; the facial skin and cere 

 bright yellow ; the irides bright yellow ; the legs and feet pale 

 dirty yellow ; claws black. 



In younger birds the bill is bluish horny ; the irides pale 

 yellow ; the cere, gape, &c, dingy lemon yellow. 



40.— Pandion haliaetus, Lin. (l). 



Pakchan. 



Very rare, only observed as yet in the extreme south of the 

 province. 



[I only met with the Osprey on a few occasions. One fre- 

 quented the Malewoon stream just above the village of that 

 name, and was generally to be seen perched on a huge dead 

 tree growing close to the waters' edge ; but it was so exces- 

 sively wary that I could never even obtain a shot at it ; once 

 while canoeing up the Pakchan very early in the morning 

 I disturbed one that was seated on a dead branch that over- 

 hung the stream, and within a foot of the water, intently 

 eyeing the stream beneath. I obtained one specimen, a female, 

 further up the same stream. Besides these three I noticed the 

 bird perhaps a dozen times, and as far as my recollection serves 

 me, only in the Pakchan. I can never remember seeing it any- 

 where on the coast, nor in any of the many rivers whose 

 course I have ascended, so that except in the extreme south, 

 it must, I think, be very rare in Tenasserim. — W. D.] 



41.— Polioaetus ichthyaetus, Horsf. (3). S. F., III., 

 pp. 29, 363. 



(Tonghoo, Rams.) Thatone ; Pabyout ; Pakchan. 



Sparingly distributed throughout the less elevated portions 

 of the province. 



[Though, owing to the extreme wariness of the bird, I only 

 procured a leash of specimens, it is not very uncommon in 

 the plains portions of the province, but I never met with it any 

 where in the hills. 



At inland pieces of water, in the Thatone plains, it was not 

 rare ; on the coast, too, I have often seen it, and two or three 



