30 MR. W. J. F. WILLIAMSON ON 
which was greenish in front only.) 
T.L. 406, 394 mm. W. 252, 242. 
Mr. H. ©. Robinson, to whom these specimens were submitted, 
remarks that they are rather to» pale for the Himalayan form (Accipit- 
er nisus melanoschistus Hume) of the ordinary Enropean Sparrow-Hawk, 
and are probably migrant specimens of some Chinese race. 
Both specimens were obtained in the bare, dry rice-fields south 
of Sathorn Road. In the case of the first one, my collector reports 
that he had just shot a Red-throated Pipit (Anthus cervinus), on the 
ground, when the hawk suddenly swooped on it from the air, and car- 
ried it off to a tree to devour, The man followed the hawk to the 
tree and shot it there. 
-*42. Falco peregrinus calidus Lath. Zhe Hastern Pere- 
grine Falcon, 
12 subad. Bangkok, Central Siam, December 1917. 
Iris dark brown. Bill bluish grey at base, passing into black- 
ish at tip. Cere, eyelids and skin round eyes greenish grey. Legs 
yellow. Claws black. 
T.L. 457 mm. W. 325. 
Family COLUMBIDM®—lgeons and Doves. 
43. Columba livia intermedia Strick]. Zhe Indian 
Blue Rock-Pigeon. 
Columba intermedia, Faun. Brit. Ind., Birds, iv (1898), p. 29° 
Barton (Journ. Nat. Hist. Soc. Siam, i, p. 108), in his “ Short 
List of Birds from the Raheng District,” observes:—‘ Kept by priests 
in Raheng Wats (Temples), I have not seen them wild, but they must 
be found in suitable places.” 
H.R. H. the Prince of Chumporn has sent me a specimen shot 
by him in May 1915 at Muang Singh, in Central Siam (W. 212. mm.), 
and another (¢), procured at Chainat, also in Central Siam (W. 210), 
in February 1917. Subsequently, my collector shot one at Tachin, 
in January 1918, and two in the immediate vicinity of Bangkok, in 
May and July 1918, of which list three the measurements are as 
follows :— 
JOURN. NAT. HIST. SOC, SIAM. 
