POLYPI. “Tt 
tinctly inserted into an indent of the stem. The last form the 
genus Laomedea Lamovuroux. Those which have cells entirely 
without pedicle may be thus divided : 
«) with cells bifarious or scattered (Sertularia Lam.) 
Sp. Sertularia abietina L., Ev. Corall. Pl. 1. No. 2. B, b ; Sertularia pumila 
L., Evi. Corall. Pl. v. No. 8. fig. a, A, Lister, Phil. Trans. 1834. Pl. vit. 
fig. 3, &c. Jounston, Br. Zooph. p. 66, Pl. x1. figs. 3, 4, and p. 75, Pl. 
xi. fig. 1. 
b) with cells verticillate (Antennularia Lam.) 
Sp. Sertularia antennina L., Euw. Corall. Pl. rx a. 
c) with cells secund (Plumularia Lam.) 
Sp. Sertularia pluma Evi. Corall. Pl, vi. fig. b, B, &e. Jounstoyn, Br. 
Zooph. p. 92, Pl. xxi. figs. 1—3.1 
Orver Il. Octactinia. 
Tentacles eight, pinnate. Nutrient canal contained in a distinct 
abdominal cavity, connected with it by interposed lamellz. 
Family III. Xenina. Common body, fleshy or membraneous, 
affixed by the base. Polyps not retractile, with pinnate tentacles. 
Xenia Sav. Common body growing upwards into stems divided 
at the top, branches short. Polyps fasciculate, collected at the 
extremities of the branches into globose heads, or umbels. 
Sp. Xenia umbellata Savieny, Déscription de V Egypte, Polypes, Tab. 1. fig. 
- 3; ScuweiacErR’s Beobachtungen auf naturhist. Reisen. Tab. v. fig. 48; in 
the Red Sea. 
Anthelia SAv. Common body, membraneous, plane, spread over 
marine bodies, stoloniferous. Polyps standing out, erect, crowded, 
at the surface of the membrane. 
Sp. Anthelia glauca Savieny, Déser. de V Egypte, Polypes, Tab. t. fig. 7. 
Note. Genus Rhizoxenia Enrens. is founded on a figure of 
Zoantha thalassantha of Lesson in the zoological plates of Dvu- 
PERRYS voyage (Voyage autour du Monde sur la Corvette la 
Coquille, pendant les annees 1822—1825). The common body is 
1 Many species which have been referred to Sertularia, belong to the Bryozoa. 
Amongst them are those which Lamarck has brought together under the genus Serio- 
laria. See VAN DER HoEveEn’s Handb. der Dierkunde, first edition, 1. p. 76. 
