238 JOURNAL, BOMBAY NATURAL HIST. SOCIETY, Vol. XXIIL 



tops of the reeds. They scuttle across the open patches to reach a place of 

 safety and keep low down close to the ground when under observation. 

 The noise made by their mandibles as they nibble at the flowers of the 

 reeds and grasses is distinctly audible, though the birds may not be visible. 

 Joyhing, Dejoo, Hessamara, Gogaldhubie, Silonibari, Komolabari, Hulmari, 

 Boduti; Dhunsirimukh, south bank of Bramapootra. 



Iris olivaceous brown ; bill deep yellow ; tip and culmen of upper man- 

 dible horny white ; tarsus bluish olive or plumbeous. Dissection of stomach 

 has proved their food to be chiefly vegetable substances ; seeds of " nul " 

 grass, larvge, earwigs, &c., found in the flowers and grevices of the various 

 grasses and reeds. Hessamara, 9-4-05, nest containing two eggs. 



- 11. Suthora ruficeps atrosuperciliaris, Godw-Aust. [59]. — Austen's Parrot- 

 billed Babbler. 



Suthora atrisuperciliaris, Gates, F. B. I., Vol. i., p. 59. 

 Apparently confined to the north-eastern corner of the valley. Occurs 

 above Margherita. 



12. Psittiparus ruHceps hakeri, Hart. [60]. — Baker's Parrot-billed Babbler. 



Scceorhynchus ruficeps, Gates, F. B. I., No. 60 [part). 

 Occurs around Margherita. Failed to meet with it in the plains. 



13. lanthocinclaruficollis, Jard and Selby. [62]. — Rufous-necked Laughing 



Thrush. 



Dryonastes ruficollis, Gates, F. B. I., Vol. i., p. 73. 

 Confined to the plains. Common in every description of scrub and reed 

 jungle, only frequents the outskirts of forest. In consequence the base of 

 the heavily timbered hills in North Lakhimpur is the limit of its range on 

 the north. 



14. lanthocincla nuchalis (Godw.-Aust.) [63]. — Ogle's Laughing Thrush. 



Dryonastes nuchalis, Gates, F. B. I., Vol. i., p. 74. 

 Confined to the north-eastern corner of the valley. Plentiful around 

 Margherita. 



15. lanthocincla Uucolophus leucolophus (Hardw.) [69]. — Himalayan White- 



crested Laughing Thrush. 



Garrulax leucolophus, Gates, F. B. I., Vol. i., p. 77. 

 Common alike in forest, both in the hills and plains. 



16. lanthocincla pectoralis (Gould.) [72]. — Black-gorgeted Laughing 



Thrush. 



Qarrulax pectoralis, Gates, F. B. I., Vol. i., p. 80. 

 Plentiful in forest throughout the whole area. Occurs over the water- 

 shed in the Abor-Miri hills. 



17. lanthocincla moniliyera (Hodgs.) [73]. — The Necklaced Laughing 



Thrush. 



Garrulax moniliger, Gates, F. B. I., Vol. i., p. 81. 

 Its range coincides with the former nearly throughout the plains as 

 proved by the collection of specimens on both sides of the valley. . Appears 

 to be the most plentiful of the two species. 



18. lanthocincla gularis, McClell. [74]. — McClelland's Laughing Thrush. 



Garrulax gular is, Gates, F. B, I., Vol. i., p. 81. 



Confined to the base of the hills. Probably has a continuous range 

 around the head of the valley. Equally plentiful in North Lakhimpur and 

 Margherita. Absent from the plain. 



Colouration, juvenis 2-7-04, S ; 25-8-04, Dejoo. Crown black, fringed at 

 base with rufous, visible portions of wings deep red brown, much richer than 

 adult, the ashy grey of breast and upper abdomen mixed with rust colour. 



