26 THOMSON, The Pennatulaceaeof the Cape of Good Hope. 



EXPLANATION OF PLATES. 



Plate I. 



Fteroeides isosceles, sp. n. (nat. size), and portion of leaf 



enlarged. 



Plate II. 



Fig. i. — Spicules from the outer part of the stalk of Utnbelhda 

 aciculifera, sp. n. x 230. 



Fig. 2. — Spicules from the tentacles of Umbellula aciculifera, 

 sp. n. x 390. 



■F*S' 3- — Spicules from the calyces of Actinoptilum molle, var. 

 zonatum. x 82. 



Fig. 4. — Spicules from the nnthocodiae of Actinoptilum molle, 

 var. maculatum. x 330. 



