F., 1869, Plate X , fig. 1a
Caption: "Fig. 1. Unfolded specimen of *Sagartia
Schilleriana*, in natural size (see p. 33); 1 a, a portion of a tentacle of the second series; 1 b, a portion of a tentacle of the first series, both enlarged twice the natural size; 1 c, termination of a primary tentacle, with the cnidæ arranged in spiral rows, six times the natural size; 1 d, longitudinal section of one tentacle, shewing the different layers of which it is composed, (p. 39)."