1941 
1941 
1942 
1942 
1942 
1942 
The following species are added to the avifauna of the Japanese Empire: from 
Sakhalin, Pinicola e. kamtschatkensis, Asio o. otus. Aythya f. ferina; from the 
Kuril Islands, Calcarius ]. coloratus, Jynx t. chinensis, Glareola p. lmaldivarun,; 
from Shikoku, Larus schistisagus, L, h, pallidissimus, L. ridibundus; fron 
Tsushima, Bgretta i, intermedia; from the Bonin Islands, Turdus n.’ eunomus, Ninox 
g, scutulata, Ixobrychus eurythmus, Anser f, fabalis, A, f. serrirostris, Anas 
penelope, Fregata m, palmerstonei, podiceps n, nigricollis, P, ruficollis 
japonicus, Sphenocercus s. sieboldii, Vanellus vanellus, Himantopus h, himantopus; 
from Volcano Island, Turdus n, eunomus, 

"Breeding of Emberiza schoeniclus pyrrhulinus at Nopporo, Hokkaido": Tori, XI 
(51,52), pp 52-61, 5 pl, Oct 1941. 
Formerly only two breeding records of this bunting existed in Japan, The author 
gives detailed observations of the southernmost breeding record, made at Nopporo, 
near Ishikari, Hokkeido, where the bird is fairly common, living in tall Pampas 
grass in the moist plains suitable for pasture, The colony arrives in April and 
leaves in October, The first brood of young birds leaves the nest the end of 
June or early July, and the second the end of July or early August, The nest ie 
composed of coarse grass lined with horsehair, As the species keeps down pests 
in the pastureland, it is beneficial to agriculture. 
"On the Three Endemic Birds in the Riu Kiu Islends; their Systematic Position and 
Zoogeographical Meaning" (with English summary): Boge, III (3), pp 320-328, Dec 
1941, 
Three distinct soecies, Garrulus lidthi, Sylvia komadori, and Picus niguchii, 
are endemic to Ryuxyu Islends, The Lidth jay was formerly placed under the 
monotypic genus of Lalocitta but is most nearly related to G, lanceolatug of the 
Himelayas, S. komedori is a modified insular type of 5, akahige, Picus niguchii 
shows characteristics intermediate between those of Picus and Dryobates, perhaps 
somewhat nearer to tne former, As the closest relatives of the Ryukyu endemics 
are found either in the Himalayas, in Japan, or widely distributed over the 
Palaearctic region, the Ryukyu Islands may be considered fundamentally to belong 
to the Palaearctic region, The southern elements of its fauna are considered of 
recent intrusion. 
"A New Subspecies of Conopoderas luscinia from the Mariana Islands": Bull Bioge 
Soc Jap, XII (3), pp 81-82, 1 fig, Jan 1942, 
The Saipan race is named C, 1. hiwae, The author recognizes only the single 
species of Conopoderas and the following races, yamashinae, hiwae, nijoi, 
luscinia, syrinx, 

"On a New Subspecies of Micropus pacificus Residing in Formosa and Botel Tobago": 
Bull Bioge Soc Jap, XII (2), pp 79-80, Feb 1942. 
A new race, M. p. kanoi, is described from Botel Tobago (Kotosho) and Formosa. 
"Reversal of Feathering of a Peahen into the Complete Male Condition" (with English 
resume): Jap Jour Gen, XVIII (1), pp 41-44, 4 fig, Feb 1942, 
4 peahen reared in the Kisaikawa Botanic Garden, Tokyo, as a normal female with 
an egg-laying record, began to assume male plumage while molting in 1938, The 
bird was killed in the spring of 1941 for histological study, There were no 
sex glande on the right side, and the oviduct was rudimentary, The ovary was 
present but showed marked atrophy of follicles, with strong degeneration in the 
Ovarian tissue, 
"A Revised Study of the Chromosome of the Muscovy Duck, the Domestic Duck, and 
their Hybrid” (in English): Cytologia, XII (2,3), pp 163-169, 14 fig, May 1942, 
19 
