PLATE VIII. 



Foi'sJcalia tholoides, n. sp. (p. 244). 



Fig. 1. Lateral view of a complete corm, drawn by me from life in Lanzerote, 

 in December 1866. The cupola-shaped nectosome bears on the 

 top a small red pneumatophore, and is composed of very numerous 

 nectophores, arranged like the scales of a fir-cone in a Inotropic 

 spiral series. The siphosome exhibits numerous siphons which 

 are attached to the axial stem by long radial pedicles, and arranged 

 in a dexiotropic spiral series. The stomachs of the siphons are red. 

 Each siphon bears on its base a long tentacle, beset with a series 

 of numerous tentilla ; the cnidobands of the latter are also pink. 

 The whole surface of the siphosome is covered with large dentate 

 bracts, ........ 



Figs. 2-5. Lateral view of four isolated nectophores (2 and 3 fully developed, 

 4 and 5 young ones), np, Triangular pedicle ; nb, its base of in- 

 sertion into the trunk ; ns, canal of the pedicle ; nr, four radial 

 canals ; nc, ring-canal ; v, velum, . . . 



Diam. 



