THE BIRDS OF NORTHERN THAILAND 379 



An example with the gonads greatly enlarged was taken by Gylden- 

 stolpe at an unspecified locality, March 5, 1912. I collected specimens 

 in post juvenal molt between July 3 and August 27 and others in post- 

 nuptial molt between July 3 and December 2. 



An adult male had the irides red ; the maxilla horny brown, horn at 

 the tip ; the mandible horn, with the basal half yellow ; the feet and 

 toes light brownish yellow ; the claws horny yellow. An adult female 

 from Doi Suthep, 2,400 feet, had the irides crimson-lake • the maxilla 

 horny brown ; the mandible with the basal half yellowish fleshy, the 

 apical half plumbeous-blue; the feet, toes, and claws fleshy. 



The adult has the crown and nape dull chestnut-rufous ; the remain- 

 ing upperparts olivaceous-brown; a conspicuous supercilium pale 

 buffy, posteriorly mixed with olivaceous-brown ; the ear coverts light 

 brown, indistinctly edged above and below by blackish streaks; the 

 throat immaculate white; the remaining underparts pale buffy (albes- 

 cent on the center of the abdomen), on the breast and sides of the body 

 more or less heavily streaked with blackish brown or dark olivaceous- 

 brown; the under tail coverts with dark or light olivaceous-brown 

 centers. The juvenile, which is unstreaked below, is colored much like 

 the adult of P. t. ochraceum; within a short time, however, it can 

 be distinguished from older birds only by the unmarked under tail 

 coverts. 



PELLORNEUM ALBIVENTRE CINNAMOMEUM (Rippon) 



Indo-Chinese Spotted-throated Babbler 



Drymocataphus cinnamomeus Rippon, Bull. Brit. Orn. Club, vol. 11, 1900, p. 12 

 (Loi Mai, Southern Shan States). 



Pellomeum ignotum cinnamomcwn, de Schauensee, Proc. Acad. Nat. Sci. Phila- 

 delphia, 1934, pp. 3, 1S9 (Doi Chiang Dao). — Deignan, Journ. Siam Soc. Nat. 

 Hist. Suppl., 1936, p. 106 (Doi Suthep). 



This babbler, which is evidently one of our rarest forms, is known 

 from Thailand by only two specimens : A female taken by me on Doi 

 Suthep, 5,500 feet, September 10, 1931 (now in the Princeton Museum 

 of Zoology), and a female collected by de Schauensee on Doi Chiang 

 Dao, 5,000 feet, January 18, 1933. Another was shot by me on Doi 

 Suthep, 5,300 feet, sometime prior to September 10, 1931, but was too 

 nearly destroyed for preservation; despite constant search for the 

 species during subsequent years, it was never met with again. 



It seems to occur only in extensive stands of lalang, keeping to the 

 ground and not likely to be noted unless it darts across a path, looking 

 exactly like a mouse. 



My specimen had the irides brownish red ; the maxilla dark horny 

 brown ; the mandible white ; the tarsi dusky flesh ; the toes fleshy ; the 

 claws horny flesh. 



583130 — 45 25 



