ldS7.] PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 5 



ISSS.—Turdus chrysolaus Blakistox, Clirysantli., 1883, Febr. sub No. 263 {2)art; nee 

 Temm.). 



Type.— U. S. Nat. Museum, No. 88605. 



Habitat. — Hondo (Main Island), Japan. 



This form has the bill nearly as small as T. obscurus, and the breed- 

 ing birds at least, in a general way, more resemble the latter bird than 

 T. chrysolaus; they are easily distinguished, however, by the different 

 wing-formula and the absence of distinct white markings on the sides 

 of the head. 



Undoubtedly Jouy's Thrush is more closely allied to T. chrysolaus. The 

 smallness of the bill, however, is at once apparent, and the coloration of 

 theaxillaries and under wing-coverts is considerably different, showing 

 as it does a strong suffusion of the rusty color of the flanks, while in T. 

 chrysolaus the axillaries and greater under wing-coverts are pure gray. 

 The two species seem also to difier in the coloration of the throat. In 

 the adult male birds of T. chrysolaus the feathers of this part are uniform 

 sooty black clear to the grayish base, and more or less margined with 

 rusty, according to season. In T. jouyi the sexes seem not to differ in 

 this respect, for both birds of the breeding pair which Mr. Jouy col- 

 lected have the throat pure white, streaked with dusky, and there can 

 be no doubt that both these birds are adult. They possess, moreover, 

 a faint trace of a superciliary stripe behind the eye, and, on the whole, 

 present features somewhat intermediate between the two old species, 

 without, however, forming anj^ connecting link between them. 



A bird of the year, collected by Mr. Jouy at Tokio, on March 1, 1883, 

 I refer with some doubt to the present form. It has, however, the 

 small bill and the axillaries strongly tinged with rusty, in these respects 

 differing from a bird of corresponding age and undoubtedly referable to 

 T. chrysolaus. The greater richness of the rusty and olive color I take 

 to be due to season. 



A full description of this form I reserve for a future fuller account 

 of the Japanese Thrushes. 



