In 1929 the Ornithological Society of Japan published in Tokyo Hachisuka’s Contributions to the birds of the Philippines, in the form of two small volumes. The first volume, dated December 1929, covers geography, history, bibliography and distribution, while the second volume, dated January 1930, provides a complete list of Philippine birds with rather limited information. This was the precursor of Hachisuka’s major work.
Further Contributions 1939 discusses the place I believe Koike worked in 1929 when he collected the bird.
https://www.jstage.jst.go.jp/article/jjo1915/11/51-52/11_51-52_61/_pdf .
V. 29 1930 Tori Japanese Journal of Ornithology
https://www.jstage.jst.go.jp/browse/jjo1915/6/29/_contents/-char/en .
I cannot find Contributions
v. 28 1929 Tori JJO
https://www.jstage.jst.go.jp/browse/jjo1915/6/28/_contents/-char/en .
I cannot find Contributions.
Auk:
Hachisuka's 'Contributions to the Birds of the Philippines.'-- This work, in two parts, is printed in English and forms a special publication of the Ornithological Society of Japan. Part I • includes a description of the physical features of the Philippines and the climate, rainfall, and humidity; a history of the ornithology of the islands, with an extensive annotated bibliography; and a discussion of avifaunal distribution. The bibliography of 235 titles occupies sixty-one pages and is a valuable aid to anyone studying Philippine ornithology. Part II 2 contains a list of species with annotations on those with which the author is better acquainted. Although the activities of the author in the islands is not very clearly set forth, he appears to have made an expedition to Mount Apo in Mindinao, and to have had full access to the collections of the Bureau of Scienc.e, during his stay. New forms are described in the genera Phapitreron, Leucotreron, Mu•cadivore•, Macropygia, Streptopelia, Kakatoe, Tanygnathus, Loriculus, Penelopides, Hemiprocne, Callocalla, Centropus, Chrysocolaptes, Dendrobiastes, Rhipidura, Macronus, Cisticola, Pardiliparus, Callisitta, and Alauda. A new genus A poia (p. 205), is erected for Zozterops goodfellowi and a new subfamily Hypocryptodiinae for Hypocryptodius cinnamomcus (p. 206). The work is well printed and forms an important addition to the literature of Philippine ornithology.--W. S.
Google Book:
Contributions to the Birds of the Philippines, Issues 1-2
Contributions to the Birds of the Philippines, Masauji Hachisuka
Issues 13-14 of Supplementary publication, Nihon Chōgakkai
Author Masauji Hachisuka
Publisher Ornithological Society of Japan, 1929
Length 222 pages
National Library of Australia:
Contributions to the birds of the Philippines
Bib ID 3601380
Format Book
Author Hachisuka, Masauji, 1903-1953
Description [Tokyo] Ornithological Society of Japan, 1929-30
2 v. in 1. (x, 222 p.) 3 plates. 22 cm.
Series Nihon Chōgakkai. Supplementary publication no. 13-14)
Notes Introduction also in Japanese.
Bibliography: p. 53-113.
Subjects Birds -- Philippines.
Other authors/contributors Nihon Chōgakkai
So this article was one of two monographs published by same society who published Tori Japanese Orniothological Society but as no. 13 and 14 in a Monograph series.
Notes on the birds of the Philippine Islands and Borneo.
https://www.jstage.jst.go.jp/article/jjo1915/8/38/8_38_220/_pdf .
1934 Tori Hachisuka