﻿10 ZOOPHYXARIA. 



Suborder I. SABULICOL^. 



Coral-tree symmetrical, of a definite form, whicli when 

 once reached remains unaltered, witli a simple base, with a 

 central stem with longitudinal cavities, and supported by more 

 or less distinct calcareous spicules, and often strengthened by 

 a single fusiform, elongate, calcareous central axis, living with 

 the base sunk in the sand or mud of the sea-coast. 



Polypes forming free marine colonies ; the composite basal 

 portion with locomotive powers and special cavities, with or 

 without a solid free axis. 



Polypiers nageurs, Cuvier, R. A. ed. 2. pp. Ill, 317. 



Sabulicolfe, Grmj, Ann. H,- Mac/. Nat. Hist. 1859, iv. p. 439. 



Calamides, Latr. Fcim. R. A. 1825, p. 341. 



PennatiUidse (Pennatulides), Milne-Edtc. 8f Haime, Corall. i. pp. 102, 



206. 

 Pennatulacese, Verrill, Proc. Essex Inst. 1865, pp. 149, 181. 



Section I. Pennatularia. 



Body free, more or less pen-like, with a naked peduncle and a 

 single central axis. The upper part with polypes placed in trans- 

 verse series on one, sometimes on all sides. Axis fusiform, elongate, 

 cylindrical or quadrangular, calcareous, as long as the coral. 



PeiinatiilidfB (part.), Milne-Echo. Sc Haime, Coral, p. 206. 

 Pennatulidae, Gray, Ann. ^ Mag. Nat. Hist. 1859, p. 439, 1860, v. p. 20. 



" The polypes of Pennatulidse are united into communities, w^hich 

 are unattached and capable of voluntary locomotion (?). The polypes 

 are regularly arranged at the upper part of a structure which con- 

 tains special ducts and a central cavity, sometimes subdivided or 

 enclosing a soKd axis attached to the wall by muscular fibres. The 

 lower extremity is bulbular and capable of expansion and con- 

 traction, by means of a well-developed common muscular action." — 

 Verrill, Mem. Boston Soc. N. H. 1862, i. p. 2. 



See " Revision of the family Pennatulidag, with Descriptions of some 

 new Species in the British Museum," by Dr. J. E. Gray (Ann. & Mag. 

 Nat. Hist. 1860, v. p. 20). 



" Notes on some specimens of Claviform Pennatulidae (VeretiUeae) 

 in the British Museum" (Ann. & Mag. Nat. Hist. 1862, x. p. 73). 



J. A. Hcrldotz, ' Notices sur les Polypiers Nagcurs,' 4to. 



