196 NUTTING [178] 



Spitzbergen (Marktanner-Turneretscher) ; New England Coast (Ver- 

 rill) ; Puget Sound (Nutting). 



LAFCEA FRUTICOSA M. Sars. 



Lafoea fruticosa M. Sars, Bemaerkninger over 4 norske Hydroider Vid. Selsk. 

 Forh,, 1862. — G. O. Sars, Bidragtil Kundskaben om Norges Hydroider, 

 p. 26, 1873. — Clark, Proc. Acad. Nat. Sciences, Phila., p. 216, 1876. 



Distribution. — Juneau, Berg Inlet and Kadiak, Alaska (Harriman 



Exped.) ; Kiska Harbor, Shumagin Islands, Alaska (Clark) ; British 



Coasts (Hincks) ; Lofoten, Norway (G. O. Sars) ; New England 



Coast (Verrill) ; Puget Sound (Nutting, MSS.). 



LAFCEA ADH-^RENS sp. nov. 

 (Plate x»i figs. 3, 4.) 



Trophosotne. — Colony forming an encrusting mass of adherent root- 

 stocks disposed both longitudinally and transversely over colonies of 

 other Hydroids, the tubes of the rootstock interwoven much like the 

 threads of a fabric. Hydrothecas sessile, tubular, often more or less 

 curved, aperture facing upward, entire ; margin slightly expanded. 

 The hydrothecae are very irregularly disposed, being much more 

 crowded in some places than in others. 



Gonosome. — The ' Coppinia ' mass is much like that of Lafoea du- 

 mosa^ being composed of closely packed gonangia interspersed with 

 long, tubular, variously curved modified hydrothecae. The gonangia 

 are flask-shaped, with a tubular neck and small aperture. Each 

 gonangium apparently contains a single ovum. 



Distribution. — Kadiak Harbor, Alaska. Growing over stems of 

 Thuiaria turgida (Harriman Exped.). 



This interesting species is so different in appearance from the others of 

 the genus that I was at first inclined to make it the type of a new genus. 



GRAMMARIA. 



Trophosome. — Stem fascicled, composed of an axial tube from 

 which the hydrothecae spring and to which they are partly adnate, 

 completely enclosed by a definite number of peripheral nonhydro- 

 thecate tubes. 



Gonosome. — A ' Coppinia ' mass. 



GRAMMARIA IMMERSA sp. nov. 

 (Plate XXI, figs. 5, 6.) 

 Tropkosome. — Stem rigid, erect, giving forth scattered, stiff and 

 straight, alternate branches forming nearly a right angle with the stem. 



