90 



MESSRS ROBINSON AND KLOSS ON 



,„ /Claws much curved, liincl claw lon{,'er than inner 

 (Claws straight, hind claw shorter than inner 



Ictina'etus iitalaj/cnsis. 



^„ I Primaries exceeding secondaries by more tlian length of tarsus 

 (Primaries exceeding secondaries by less than length of tarsus 



^ . (No elongate occipital crest 



15 



An elongate occipital crest 



f No elongate crest 

 ( An elongate crest 



^f, j Larger ; wing exceeding 16 inches 

 (Smaller; wing less than 14 inches 



A(jniln )itnculata. 

 .. Laphotriordiis kieneri. 



Splz i'c'tuf> cirrJtatus J'Dini'ii'tua. 



Spizai'tits n iiyilenais. 

 Spizacfits albonicjcr. 



17 



18 



Tarsi reticulated ; scutellae broader than high 

 th some scutellae broader than high 



f Tarsi ret 

 (Tarsi \vi 



f Tarsi more than \ length of bill from gape 

 ( Tarsi iess than ^ length of bill from gape 



,Q I Scales in front of tarsus the same size as those behind 

 (Scales in front of tarsus larger than those behind 



20 



Not crested 

 Crested 



Elanus cicrulens ccerulcus. 



Butastur indiciin. 

 Circaetus gallicus. 



„. j Wing always exceeding 16 inches 

 (Wing never exceeding 16 inches 



nn I Scales beneath toes rough and pointed 

 (Scales beneath toes not rough and pointed 



23 



f Breast in adults grey ; claws rounded beneath 

 "(Breast in adults white; claws grooved beneath 



„ , f Size large ; wing exceeding 17 inches 

 t Size small ; wing less than 17 inches 



-Sjn /(•)/■» is chcela ruflwrfordi. 

 S2nior)iis chccln bassits. 



■.. HaUartita Icucmjastcr. 



Polioai'tiis ichtlu/aetKS. 

 PoUoai'tus lu<))iiUs hniniUs. 



fSize moderate; wing over 12 inches 

 (Size smaller ; wing under 11 inches 



f Tarsus short 

 "( Tarsus long 



Tail rounded 

 Tail forked 



„Q /Larger; a conspicuous white patch beneath wing 

 (Smaller; no conspicuous white patch beneath wing 



Ihdlasluy indus intcniicdius. 



Milnis viclnnotis. 

 ; Milvus mirjrans govinda. 



29 



[Bill from cere to tip less than 0'75 inch 

 (Bill from cere to tip more than 0'75 inch 



„^ / Abdomen paler 

 ( Abdomen darker 



31 



f Crested 

 ( Not crested 



Circus mclanolcucus. 



Circus c'.^jiZojio^Wi'. 

 Circus ccruginosns ccruginosus. 



Loiihospizias Irivirgaius riijidncins. 



„n /Tarsus and toes thick ; middle toe short 

 i Tarsus and toes slender ; middle toe elongate 



33 



(Upper parts pale grey, beneath banded 



in adults ; larger . . 

 I Upper parts dark blackish grey, 

 { beneath unifoiln in adults ; smaller 



Asdir badiiis jwZiojwis. 

 Astur soloe'nsis. 



13 



14 

 15 



16 



18 

 22 



19 

 20 



21 



23 

 25 



24 



26 

 31 



27 

 29 



28 



30 



32 



33 

 34 



JOUKN. NAT. HIST. SOC. SIAM. 



