236 MESSRS. ROBINSON AND KLOSS ON 



Moulting birds in llie piesent .series show that the fresli plumage us 

 deeper in colour, as might be expected. If these bird.s are sorted by 

 the amount of white in tlie lores, those from Sumatra ( G. m. modi- 

 (jiiaiil Salvad. ), Borneo ( (r. m. salvaduri Buttikofer ), and the East 

 Coast of the Peninsula ( G. m. 'pcctorali'^ Davi.son ) fall into one 

 section, while those from West Java (G.m. jacobsoni Van Oort ), 

 Engano Id. ( G. ru. niusclcapa (Jberholser ) and from the coast of 

 Perak and Selangor, fall into another, 



The conclusion is not an unexpected -(jne, and should adequate 

 series (jf all the re[)uted forms confirm it, the first grou}) would have 

 to be called G. m. itiodigllanil Salvad., and the second G. m. 

 jacobwnl Van Oort, but in the absence of adequate series from all 

 the localities we leave our Siamese material under the name which 

 undoubtedly applies, 



Geryrfuiie simplex (Cab.), from Luzon, and G'-ri/r/oncrhizophora 

 Mearns, fr(jm Mindanao and Suiu, also require comparison ; but 

 jud'-ing from description would appear to come nearer Gcrygone 

 jiaveula Cab., from Celebes. 



326. Xanthopygia iiarcissiua xanthopygia (Hay). 



Miiscic:i pa .ra)tthop}/gia, Hav, ]M;uhMs Jdiuu. Lit. Hci. xiii. pt. 2, 



1845, p. 162 ( Malacn. ).' 

 Xantko}>y(jia .ranthopugui xaidhnjnpi'Ki, M., }t. 215 (Tung 8ong ). 



-'". Kandhulu, Chaiya, Peninsular Siam, 21 September 1919 

 ( E. Seinnmd ). 



6. Koh Lak, S. W. Siam, :^ April 1919 (No. 5000). 



^ Plat Sanuk, near Koh Lak, S. W. Siam, 19 April 1919 

 (No. .3i06). 



"Iris dark: bill black, basal half of lower mandible slate; 

 feet slate ". 



Total length, — , i;J2, 18:^ ; wing, — , G8, 70 ; tail, — , 52, 52 ; 

 tarsus, — , l.S ( ajjp.), 1(5 : bill from gape, — , 15, 14.5 nnn. 



Probably only a bird of passage in Peninsular Siam, as it is 

 in British Malava. 



A. lliiiiie iV iJavi.son, Stray ?"cHicr, vi, 1878. E» O. Grant, Fasciculi Malayenses, iii (Birtfs), 1905. 



B. Miilkr, nio Oriiis (lor liisci SiiIaiiKa, 188-2. F. llol.iiison and Kloss, Dns. 1910-11. 



C. Oiilcs. Hiids Hiil. Hiiriiiali, A'^)1^5. i iV: ii, 188:3. G. (iainlnur. .lonni. X. H. Soc. Siani. i, JOl.l 



D. IJuiiliole, r. Z. S. I'JOl. Vol. i. H. K.plilnson. Jiniin. K. JI. S. Mimeiuns, v, 1015. 



JUUllN. NAT. HLST. SOC. SIAM. 



