ppl. a. (UN-1 8.)
1887. Lubbock, in Linn. Soc. Jrnl., Zool., XX. 124. It is, however, easy to imagine that in unpigmented animals … the light might act directly on the nervous system.
1898. P. Manson, Trop. Diseases, ii. 49. The earlier unpigmented phase [of the malaria parasite].
