Ferris, G.F. 1919d Notes on Coccidae - IV. (Hemiptera).. Canadian Entomologist 51: 249-253.

Notes: Eremococcus n. gen.; redefines genus Sphaerococcus; discusses and redescribes S. casuarinae, Amorphococcus leptospermi, Kuwanina obscurata.