32 AKT. 13. E. LÖNNBERO : 



eluded that a pale or spotted throat and rusty under-wing-coverts 

 represent a more juvenile stage, than that in which the parts 

 mentioned are sooty black and gray respectively. Also as remains 

 from younger stages must be regarded the traces of light eye-brow 

 stripes, present in a couple of females and in a male, all with 

 pale throat. After all I have said, I think Tardus jouyi 

 Stejjsegee must be regarded to be adult and breeding, never- 

 theless young and not yet fully developed, specimens of Turdus 

 chrysolaus Temminck. It may therefore be said that Turdn^ 

 chrysolaus represents a group not fully differentiated, which in 

 its ontogeny retains to an unusual extent traces of certain 

 phylogenetic stages, in fact such characteristic features as lead 

 the form some way back in tlie direction of such generalised 

 spotted thrushes as the Kedwing and the Songthrush. 



NiKOLSKi found this thrush rather commonly breeding in 

 the middle parts of the island, but " exclusivement dans les 

 forêts à feuilles de la vallée." In the northernmost parts it was 

 not fmnd, but it became more numerous towards the south 

 (Taczanowski). 



Professor Ijima's expedition found a nest of this Tln*usli 

 containing 3 eggs at the mouth of Susuya Eiver on tlic 21st 

 of June. 



37. TitvfJvs (Jtfhùfs Beciistein. 



{=T. fuscakis Pallas). 



Cliipesani: 1?, Oct. 3; 1^/, Oct. 4; 1?, Oct. "> ; 2??, 

 Get. (>; Ic/, Oct. 9; 1?, Oct. 11; 1?, Oct. 14. 



Tlicse were ]-)r()])n))ly })irds on migration, as they were all 



