THE BIRDS OF SOUTH-WEST AND PENINSULAR SIAM. 



77 



ARDEIDAE. 



Hkrons and IUttkrns. 



(Tail feathers 12 

 ( Tail feathers 10 



f Feathering on tibio-tarsus not extensive 

 (Feathering extending nearly to heel 



(Middle toe and claw longer than tarsus 

 1 Middle toe and claw shorter than tarsus 



( Edge of niandihles serrated 

 (Edge of mandibles not serrated . . 



jWith ornanientalplunies to head, no dorsal train 

 (With no ornamental plumes, a dorsal train . . 



( Crown of head slate colour 

 1 Crown of head white 



/Bill (eulmen) not, or only slightly, exceeding middle 

 ' toe and claw ; tarsus more than 5 inches . . 

 , Bill (eulmen) much exceeding middle toe and claw ; 

 \ tarsus less than 4 inches 



(Bill without serrations 

 \ Bill with serrations .. 



CCulmen longer than tarsus 

 • Culmen about equal to tarsus 

 (Culmen shorter than tarsus 



(Bill longer than middle toe and claw; plumage 

 ' with no white 

 Bill equal to middle toe and claw ; plumage mainly white 

 ' Bill shorter than middle toe and claw ... 



I Smaller, head and neck brownish 

 (Larger, head and neck blackish 



(Middle toe and claw equal to tarsus 

 (Middle toe and claw exceeding tarsus 



( Size larger, wing over 6 inches 

 ( Size smaller, wing under 6 inches 



(Tarsus feathered to heel ; primaries blackish 

 (Tarsus not feathered to heel; primaries chestnut 



J'l/rrJicrodins purpurea maniUenHiH. 



Mi'fi()phoy.r intermedin . 



Ardea Rumatrnnn. 

 Ardea cineren jouiji. 



Herodina alba, 

 (larzcttn gnrtetln. 



Demiecjretta sacra. 

 . . Nycticorax nycticorax. 

 Gorsachius melayiolophus. 



Dutorides javanica. 



BubulcuR coromandus. 



Ardeola grayi. 

 Ardeola bacchus. 



Botaurus sfellari.i. 

 Dnpetnr flavicoUis. 



Ardetta sitieusia. 

 Ardefta cinnamomea. 



2 

 12 



8 



9 

 10 



11 



13 



14 



101. Pyrrherodias purpurea manillensis Meyen. 



Ardea jmrpurea, var. manillensis, Acta Acad. Leop-Carol. xvi. 



Suppl., p. 102. 

 Ardea purpui'ea, A., p. 472 (Tavoy). 

 Phoyx manillensis, D., p. 80 (Pateluiig). 

 Ardea manillensis, G., p. 152 (Ratburi and Petchaburi). 



d ad. Mamoli, Pakchan, Peuinsular Siam. 27 February, 

 1919. (No. 4295). 



I. Gyldenstolpe, Kunul. Sv. Vet. Akad. Handl. M. Baker. .Tourn. N. H. Soc. Siam, iii, 1919. 



56, No. 2, 1916. (first part). 



J. Robinson, .Toiirn. K. M. 8. Mus. vii, 1917. Baker, Journ. N.H. Soc. Siam, iii. 1919. 



K. Kloss. n)is, 1018. (second part). 



L. Robinson and Klo.ss, Journ. N.H. Soc. Siam, M.I. Baker. .Tourn. N.H. Soc. Siam, iv, 1920. 



iii, 19J9. (third part). 



VOL. V, NO. 1, 1921. 



