THE BRYOZOA 33 I 



The colony is gelatinous and composed of but one layer, and the 

 polypides, which are inclined somewhat to the surface, lie imbedded 

 in the matrix. The orifices are circular and open upon distinct 

 papillae. 



Family FLUSTRELLID^. 



FLUSTRELLA Gray. 



FLUSTRELLA HISPIDA Fabricius. 



Flustrella hispida HiNCKS ('80), pi. LXXli, figs. 1-5. 

 Flustrella hispida Johnston ('47), pi. Lxvi, fig. 5. 



Local distribution. — Yakutat, forming branching masses ; Lands 

 End; Fort Point, California. 



Foreign distribution. — Common in Britain; Bahusia; Finmark; 

 Greenland ; Heligoland ; Roscoff ; France. 



Family VESICULARIIDJE, 



BOWERBANKIA Farre. 



BOWERBANKIA IMBRICATA Adams. 



Bowerbankia imbricata Hincks ('80), pi. lxxiii, figs, i, 2. 

 Bowerbankia densa Farre ('37), pi. xx and xxi, figs. 1-16. 



Habitat. — Creeping over other Bryozoa. 



Local distribution. — Orca ; Yakutat ; Lime Point, California ; Vi- 

 rago Sound, Queen Charlotte Islands. 



Foreign distribution. — Common on the coast of Britain ; White 

 Sea; Caspian Sea; Ostend; Roscoff. 



Suborder PHTLACTOL^MATA Allman. 



Family PL UMA TELLID^. 



PLUMATELLA Lamarck. 



PLUMATELLA REPENS Linnsus. 



Plumatella repetis Allman ('56), pi. v, figs. 1-8. 

 Pbwiaiella repens Johnston ('47), 2d ed., p. 403, fig. 'jd. 



Local distribution. — Water-lily pond at Kadiak ; Lake Washing- 

 ton, Seattle ; Mountain Lake, San Francisco. 



Foreign distribution. — Through Great Britain ; Lake Lucerne ; 

 LakeComo; Alpine lakes; lakes in the Pyrenees ; France ;JItaly; Ger- 

 many ; Prussia ; Sweden ; Denmark. 

 Proc. Wash. Acad. Sci., October, 1900. 



