WEST COAST HYDEOIDS 61 



ABIETIXAEIA GRACILIS Xutting 

 Abietinaria gracilis Xuttixg, American Hydroids, Part II, 1904, p. 120. 

 Distrilution.— Albatross Station 2873, N. 48° 30', W. 124° 

 57', 40 fathoms; Station 3480, X. 52° 06', W. 171° 45', 283 fath- 

 oms; Station 3599, N. 52° 05', E. 177° 40', 55 fathoms (Nutting). 



ABIETIXAEIA GEEEXEI (Murray) 



Sertidaria greenei Murray. Ann. and Mag. .3rd Ser. V, 1860, p. 504. 

 Sertularia greenei Clark, Hydroids of the Pacific Coast, 1876, p. 2.57. 

 SertuJaria greenei Torrey. Hydroida of the Pacific Coast. 1902, p. 69. 

 Abietinaria greenei Xuttinx., American Hydroids, Part II. 1904, p. 121. 



Distribution. — Tomales Point. ^Monterey, Punta Reyes, San 

 Francisco, Port Renfrew, Vancouver Island (Xutting) ; San 

 Juan Archipelago, Dodd's Xarrows, Departure Bay, Port Ren- 

 frew, Ucluelet. 



ABIETIXAEIA IXCOXSTAXS (Clark) 



Sertularia inconstans Clark, Alaskan Hydroids, 1876. p. 222. 

 Abietinaria inconstans Xutting, American Hydroids, Part II, 1904, p. 116. 



Distribution. — Unalaska (X^utting) . 



ABIETIXAEIA EIGIDA, new species 

 PI. A'. Figs. 1-3 



Troplwsome. — Largest colony ohtained reaches a height of 4 

 inches. The main stem is coarse, rigid and but slightly flexuose, 

 with annulations at the base, but with little indication of being 

 regularly di"\aded into internodes. Some specimens over 2 inches 

 in length are entirely unbranched. TVlien the branches are pres- 

 ent they have usually a regular alternate arrangement, each 

 branch making a wide angle with the stem. As the branches also, 

 are rigid, the whole colony has a coarse stiff appearance. The 

 number of hydrothecae between two successive branches on the 

 same side of the main stem is by no means constant, but is com- 

 monly three. At the junction with the main stem, the branch is 

 much constricted, so that it readily breaks off at that point. The 

 branches have at most one or two nodal rings, in many cases there 

 appears to be none present. The hydrothec® on the main stem 

 and on the branches have a regular arrangement, but on the 

 branches they are somewhat moi;^ closely placed. They are stout, 

 narrowing gradually but slightly, towards the circular opening, 

 the margin of which is perfectly smooth, hing parallel to the 



