180 MR. E. C. STUART BAKER ON 
Kon Lak, in the province of Pran, and recently renamed PRa- 
CHUAP KIRLKAN. 
May 1919. KE, G. HERBERT, C.M.Z.S., M.B.O.U. ] 
1. UROCISSA ERYTHRORHYNCHUS MAGNIROSTRIS, 
Psilorhinus magnirostris, Blyth. J. A. 8, B., xv. p. 27 (1846). 
2 5 Chan Teuk, E. Siam, 10. 8. 15. 
Both the specimens obtained are young birds in heavy moult, 
but must, of conrse, belong to this sub-species. Its white-marked 
head at once separates it from U. e. erythrorhynchus. In fully adult 
birds the size of the bill is alone sufficient to distinguish it from U. «. 
oceiitalis ; in the latter form the culmen from the gape averages about 
32 mm., and in the former about 38 mm. 
2. CISSA CHINENSIS. 
Coracias chinensis, Bodd. abl. Pl. Exl. p. 38 (1783). 
2 Klong Song, near Petriu, C. Siam, 28. 2. 16. 
Q juv. Hup Bon, S. E. Siam, 17. 7. 15. 
The young bird has the whole of the under-parts a_ brilliant 
lemon-yellow, a not unusual feature in fresh skins of young birds, but 
unfortunately the yellow invariably iades away as the skin dries and 
ages, unless it is entirely excluded from all light. 
Gireen Magpies are birds which it is impossible to divide into 
geographical races, if only the depth and variation of colouring of the 
reds, blues and greens are used as a means of differentiation, as these 
colours change with extraordinary rapidity after the bird is killed. 
Even in life, captive birds differ from wild ones, and healthy ones from 
those in poor health and condition. 
Fortunately, with most species of Green Magpies, there is a differ- 
ence in the size and distribution of the markings which renders discrimi- 
nation fairly easy. This, however, is not so in the case of C. c. minor, 
the form hitherto accepted as inhabiting Siam and Malaya, as the 
differences sometimes alleged to exist in colouration between this and 
O. c. chinensis ave not maintainable, whilst I cannot find that the sup- 
posed differences in size are any more reliable. ‘Theoretically C. ¢. 
chinensis is supposed to have a wing from 140-150 mm., whereas C. c. 
minor has it under 135 mm. Of the present two specimens the adult 
JOURN. NAT. HIST. SOC, SIAM. 
