142 Lord Walden on a further Collection of 



any kind of description; and their accounts, unsatisfactory 

 and mea^Cj relate to the Bengal bird. But Mr. Blyth has 

 recorded the identity of his T. grisola with Javan, Pinang, 

 Arakan, and Andaman examples, while Dr. Cabanis, having 

 compared the S.E. Bomean example alluded to by Mr. 

 Sclater {I.e.), identified it with Javan examples oi Hyloterpe 

 philomela (Boie), Temm., in the Berlin museum. This Bor- 

 nean individual agrees well with several Javan examples, as 

 well as with one from Malacca in my collection. In it the 

 entire head above is ashy brown, the rest of the upper sur- 

 face of the bird being of a ruddy brown. The throat, cheeks, 

 flanks, abdominal and ventral region silky white slightly 

 sullied on the throat and cheeks with the cinereous hue 

 of the breast, there forming a distinctive band. The bill 

 is black. A single Javan specimen differs materially from 

 the remainder by having the head, cheeks, ear-coverts, back, 

 and uropygium uniform dark ferruginous ash-colour with- 

 out a tinge of rufous brown, and by the throat and breast 

 being almost uniform in their shade of dark smoky ash-colour, 

 though lighter than above. Neither in structure nor in di- 

 mensions can this bird be distinguished from the others; 

 and I must therefore regard it as a sexual or other stage 

 of plumage. Three other Javan individuals difter from the 

 Bomean type by having pale yellowish bills, by the upper 

 surface of their plumage being of a much redder and lighter 

 hue, and by the outer edgings of the qnills being bright 

 rufous. These may be young birds. Be that as it may, 

 three very distinct phases of plumage are represented in my 

 Javan series. 



The tbree Andaman specimens obtained by Mr. W. Ramsay 

 have the head above and nape smoky ash-colour, very much 

 like the single Javan bird described above ; but the cheeks and 

 ear-coverts are pale grey, nearly white, and not fuliginous. 

 The dorsal plumage has more an olive than a ruddy tinge, 

 and is not fuliginous. Underneath, the colouring agrees with 

 the Bomean bird. These Andaman examples therefore re- 

 present a fourth phase of plumage ; for I am disinclined, with- 

 out more acquaintance with the group, and after Mr. Blyth's 



