Reactions to light in Planaria maculata with special reference to the function and structure of the eyes (1918)
Taliaferro, William Hay, 1895- · Baltimore · leaf 170
ns. The middle region of the retinula, or the re-gion whioh corresponds to the ellipsoid of the verte-brates, in the living condition in Prorhynchus applana-tus, according to Kepner and iallaferro (16), is themost refractive portion of the retinula. Ihe same holdstrue for Planaria maculata after… … Figure 16.iiiagram representing- the relation tietween structure andphotlo stimulation in the individual retinula. A, oneof the accessory cellB which form the pigment-cup; M,middle region of the retinula; HA, nucleus of accesso-ry cell; H, nucleus-bearing region of retinula; K, sen-sory rhabdome.…
