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PROCEEDINGS OF THE NATIONAL MUSEUM. 337 
Measurements—Continued. 
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: Sex an |g 5 A 
Museum and No. Collector and and Locality, Date. hl = b ia 
No. age. = ° S ea 
Gt See I ete [ot ey 
Sle Pr bee eagle 
is oS | vey ° 
Flalala|S de 
U.S. Nat. 120398..| Henson, 1189} ¢ jun..| Hakodate Yezo} Sept. 17,1884 | 74 | 49 | 10> elGs, | 16a 
U.S. Nat. 120399-..| Henson, 1219} ¢ jun-..|....do-...... .... Sept. 23,1886) 78) 51.10 |17 j.s2c2 nia 
U.S. Nat. 120400.-| Henson, 1223) § jun--|....do........-. Sept. 30,1884} 76 | 49 | 9.5) 16.5) 16 |.... 
Wes Nat, 120401. .| Henson, 1351) 9 ad: --|--..do--2--.2-2- May 20,1885} 72 | 47) 9.5} 16.5] 16.5].... 
U.S. Nat. 120402. .| Henson, 1283) 9 ad..-.|.-..do..----.-.- May 30,1885) 75 | 47 9.5) kT Cee 
U.S. Nat. 96139 --} Blak, 2284...) 2 ad...| Mori, Yezo .-..| May 13,1877! 74 | 50 | 10 16.5) 17 | 120 
U.S. Nat. 109343. .| Namiye....-. Q ad...| Amagi, Hondo.| May 12,1885 | 73 | 51 | 10 | 16 | 15.5].... 
U.S. Nat. 88622 ..| Jouy, 518....| 9 ad_..| Fuji, Hondo-.-.| July 14, 1882 | 74 | 48 | 10 | 16 | 16 |.... 
Wis Wabsceo2o”.-| JOLY, G2p.-.-| Cad. .:|..-.do o.2.2. .2c. July 30,1882) 73 | 47| 10 | 16 | 16 |...- 
Aversre measurements of 23: males). =... 52s. 2 oben ec ecesatee nace ans 76 | 50 | 9.8] 16.6] 16,4).... 
Average Measurements Of 6 females! ..-. <=... 6 2n -oee nen cn eee ese sen ne 74-| 48 | 9.8] 16.3] 16.2).... 
Hemichelidon griseisticta SwWINH. 
Henson Coll., No. 238; ¢ jun., Hakodate, Yezo; September 1, 1885; U.S. Nat. Mus., 
No. 120403. 
This is a very interesting addition to the Japanese avifauna. It was 
quite natural that Mr. Henson should mistake this specimen for H. si- 
birica (GM.), when he found that it differed from the common Japanese 
Gray Flycatcher (A. latirostris). It occurred to me that the alleged 
occurrence of the former species in Japan might also rest on specimens 
belonging to H. griseisticta, but an examination of the skin, upon 
the identification of which H. sibirica has been introduced into the 
fauna of Japan (Blak., No. 2730, U. S. Nat. Mus., No, 96138; See- 
bohm, Ibis, 1884, p. 37) proves that it was correctly referred to this 
species. To which species, however, the two specimens in the Tokio 
Educational Museum mentioned by Messrs. Blakiston and Pryer (Trans. 
As. Soe. Jap., X, 1882, p. 148) belong must, of course, remain doubtful 
until they be carefully examined and compared.* As Henson’s speci- 
men has still a few feathers of the first plumage left, it is reasonable 
to suppose, that /. griseisticta, although rather rare, may breed in Yezo. 
We have consequently three gray Flycatchers in Japan, which in 
general appearance are very much alike, and therefore difficult to dis- 
_ tinguish unless close attention be paid to their essential characters. 
The following “key ” may assist in identifying the three species. 
' First (tenth) primary, very short, much shorter than the primary coverts; second 
primary longer than fifth; wing more than 75 ™™ _._.....(H®MICHELIDON). 
b' Inner edges of remiges (as seen from below) vinaceous-cinnamon; longer 
under tail-coverts brownish gray with white tips; breast and flanks clonded 
with dr: ae. Btn eas sta tea con a lane iciage oe ee pele er eee Se 52 ded SUD WE TCOE 
*It is even baaiciiligs that Tee may paler to a ue th species, the B. manillensis 
of Tweeddale, which seems to have a longer and narrower bill and to be somewhat 
larger (see farther on). 
cord EOC, 
TSS . 
