1. (1) Yuasa, H. and T. Onoe 1930: Ptilineurus niarrnoratus, an Anobiid beetle noxious to the rush mat, with description of a new Bethylid fly. Journ. Imp.Agr. Exp St. (Tokyo) , 1, (3) , 215-230, 5 pls.
2. (2) Uemura, T. 1935: (On the occurrence and the damage of Sclerodermus nippoensis in Nogami) . Journ. Kishu-doshokubutsu, 2, (1) , pp. 3. (In Japanese)
3. (3) Kono, H. and N. Inoue 1938: (On he beetles of the genus Ernobius injurious to Pine trees.) . Hokkaido Ringyo Kaiho, 1938, pp. 5. (In Japanese)