Siraiwa, H. 1933 [Investigation of mealybugs (Pseudococcus).]. Plant Quarantine Statistics, No. 8. Bur. of Agr. Min. Agr. Forestry No. 55 Noji Kairyo Shiryo

Notes: No. 8, with an appendix of brief reports on investigations of disease and pests found on plants from plant quarantine inspections in 1931. For No. 55, Appendix: Yokohama Custom House, 6-10. (Not seen; presumably includes description of new species from Micronesia.)