THE BIROS OF SOUTH-WEST AND PENINSULAR SIAM. 



149 



CUCULIDAE. 

 Cuckoos. 



J Head crested 

 ( Head not crested 



/Tftrsus feathered anteriorly; wing pointed and 

 _ longer tbtm tail 



j TarsuH naked ; wing rounded and about equal to tail 

 I Tarsus naked; wing rounded and shorter than tail 



[Secondaries scarcely exceeding half the length 



j of wing 



( Secondaries two thirds the length of wing or more 



( No subtenninal black band on tail 

 ] A subterminal black band on tail 



('III III a tor coromanduH 



Kiiilijnainin ■>. nifilni/oiin 



^7 



8 



9 



10 



11 



12 

 13 

 14 



15 

 16 



I Tail square or forked; pluiutige black 



iTail rounded and graduated ; plumage not black 



(Larger, wing more than 5.5 inches; tail with 3 or 



4 black bars 

 ^ Smaller, wing not more than 6 inches; tail with no 

 I bars or with many 



Wing less than b inches: a distinct dark 



malar stripe 

 Wing more than 6 inches: no distinct dark cheek stripe 



I Abdomen never banded: back in adults blackish grey: 



\ wing 6.7 to 7.5 inches 



(Abdomen transversely banded in adults 



(Wing 7 to 8 inches: back in adults ashy grey 

 I Wing over 8.5 inches: back in adults brown 



J Ground colour of throat not white 

 1 Throat wliitish with dark cross-bars 



/Fore neck rufous like the abdomen : head like the 

 1 back, generally bronzed ; white on inner webs 

 ' of tail-feathers eontined to the edge 



^Fore neck grey contrasting with abdomen : head 

 grey, paler than the back: white on inner web 

 of tail-feathers extending to, or near, the shafts 



ChcuIus cnnnrus bakeri 

 C. m. micropterus 



Siirni( ulus lu(jubris dicruroidea 



Hiernciiccrix nanua 



H. fuqax nisicolor 



H. 



H. varius 

 sparverioxdes 



Cacomantis s. tcpulcJtralis 



(Upper parts always barred: not metallic 

 1 Upper parts unbarred in adults: metallic 



C. merulimis quentlus 

 I'enthocenjx sunnerati venustua 



J Upper parts entirely or partly deep purple 

 ( No purple above 



' Head rufous 

 1 Head not rufous 



( Back, wings and tail barred rufous and green or 

 ' greenish bronze: upper mandible dark throughout 

 j Back, wings and tail entirely coppery green: upper 

 I mandible pale at base 



( Upper parts deep shining green : upper mandible 

 ! pale at base 



^ Upper parts not intense gi-een : upper mandible 

 ( entirely dark 



Chalcococciix .rnnthorhynohui, rf 



.iaiithorlti/)i( hns, inmi. 

 C. ))iacHlatus. 9 



C. maculatus, rC 



la 



7 

 10 



11 

 12 



13 



14 



15 

 16 



17 



I. UyUlenstoliK!. Kungl. Sv. Vet. Akad. Haiidl. 

 m. No. '2. 191 G. 

 «!• Robinson, Journ. F. M. S. Mus. vii, 1917-. 

 K. Kloss. n)is. 1918. 



U. Itobinson nml Kloss. Journ. X. H. Soc. 8iam. 



Hi. 1919. 



Raker. .lourn. X. H. Soc. Siara, iii, 1919. 



(first parH. 

 IJakt-r. Journ. N. H. Soc. Siam, iii, 1919. 



(second parti. 

 . Baker, Journ. N. H. Soc. Siam, iv. 1920. 



Itliird part.)- 



VOt. V, NO. 2, 1922. 



