10 ZOOPHYTAHIA. 



Suborder I. SABULICOL^. 



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

 once reached remains unaltered, with 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, Avith or 

 without a solid free axis. 



Polypiers na^eurs, Cuvier, JR. A. ed. 2. pp. 111, 317. 



SabulicolfB, Gray, Ann. ^ Mag. Nat. Hist. 1859, iv. p. 439. 



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



Pennatulidse (Pennatulides), Milne-Edio. 8f Haime, Corall. i. pp. 102, 



206. 

 Pennatulaceae, VerriU, 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 aU sides. Axis fusiform, elongate, 

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



Pennatulidse (part.), Milne- Edw. 4* Haime, Coral, p. 206. 

 Pennatulidse, Gray, Ann. ^ Mag. Nat. Hist. 1859, p. 430, 1800, v. p. 20. 



, " The polypes of Pennatulidse are united into communities, which 

 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 solid axis attached to the wall by muscular fibres. The 

 lower extremity is bulbular and capable of expansion and con- 

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

 VerriU, Mem. Boston Soc. N. H. 18G2, i. p. 2. 



See " Revision of the family Ponnatulida?, 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 Pennatulidse (Verctillea;) 

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



J. A. Herklotz, * Notices sur Ics Polypiers Nageurs,' 4to. 



