HALECIUM. 147 



Cat. No. 426. Eastport, Me., 18G3, A. E. Verrill. 



Cat. No. 434, Mingau Islaud.s, 18G1, Auticosti Expedition. 



CotTilina tamarisca A. Agass. 



Sertularia tamarisca Lixx. Syst. 1307. 



Serlularia tamarisca JoiixsT. Brit. Zooph., p. "4, PI. XHI. Figs. 2-4. 



Eastport, Me. (A. E. Verrill ; Sea-Coal Bay, N. S. (Auticosti Expedi- 

 tion) ; Massachusetts Bay (Agassiz). 



Cat. No. 231, Graud Mauau, W. Stimpsou. Hydrarium. 

 Cat. No. 232, Massachusetts Bay, W. Stimpsou. Hj^drarium. 

 Cat. No. 425, Eastport, Me., 1863, A. E. Verrill. 

 Cat. No. 431, Sea-Coal Bay, N. S., 1861, Auticosti Expedition. 



Cotiilina Greenei A. Agass. 



Sertularia triciispidata Murray {non Alder). Ann. & Mag., V. p. 200. 18C0. 

 Sertularia Greenei Murray. Ann. & Mag., V. p. 504. 18G0. 



Growing in very thick clusters, resembling somewhat in their ap- 

 pearance fine brushes of Dynamena pumila. It is supported by a very 

 slender stem, which branches near the ])ase ; the branches rise verti- 

 cally, forming fan-shaped tufts, m which all the stems reach one level ; 

 there is no prominent main stem. It attains a height of from two to 

 three inches. The secondary branches arise in a similar way, near the 

 base of the primary branches. The sterile h^'drae have two prominent 

 exterior points to support the operculum, and two smaller ones near 

 the stem. The reproductive calycles are conical and slightly corru- 

 gated, attached by the apex, and terminate in a bottle-shaped neck. 



San Francisco, Cal. 



Cat. No. 436, San Francisco, Cal, Normal School, Salem. 



HALECIUM Oken. 



Halecium Qken. Lcln-1). dor Natm-g. 1815. 



Thoa 'La-ws.. Tol. Cor. Fk'x. 181 G. 



IMecium Agass. Cont. Nat. Hist. U. S., IV. p. 357. 18G2. 



Halecium muricatum Joiixst. 



Ualerium mnricatiim JoiixsT. Brit. Zoupli., p. 40, PI. IX. Fig.'i. 3, 4. 

 Sertularia muricata Ellis & Sol. Zoupli., \i. 5a, PI. VII. Figs. 3, 4. 



Cat. No. 421, Eastport, Me., 1863, A. E. Verrill. 



