328 ROBERTSON 



Local distribution. — Juneau; Berg Inlet; Orca; Pribilof Islands ; 

 Houston-Stewai-t Channel, Virago Sound, Queen Charlotte Islands. 



Foreign distribution. — Finmark; Spitzbergen ; Greenland; Bank 

 of Newfoundland. 



Suborder CYCLOSTOMATA Busk. 



Family CRISIID^. 



CRISTA (part) Lamouroux. 



CRISIA CORNUTA Linnaus. 



Crisia cormita {a : sine cornibus) Smitt ('65), pi. xvi, figs. 2, 3. 

 Crista geniculata Harmer ('91), pi. xii, figs. 7, 8. 



Habitat. — Upon shells and other Bryozoa. 

 Local distributio7i. — Sitka; Juneau; Yakutat; Orca. 

 JForeign distributioji. — Britain; Roscoff ; Mediterranean; Bahu- 

 sia; Norway. 



Family TUBULIPORID^. 



ENTALOPHORA Lamouroux. 



ENTALOPHORA CAPITATA sp. nov. 



(PI. XXI, figs. II, 12, 13.) 



Habitat. — Upon stems and roots of hydroids. ' 



Local distribtition. — Sitka; Juneau, 10 fms. 



Zoarium consisting of a number of zoecia arising from a flattened 

 or incrusting base, many of them uniting to form one or more short 

 columns which terminate in a rounded head. ZcEcia tubular, distal 

 ends free; those forming the column opening upon all sides of it. 

 The surface of the head composed of the orifices pressed close to- 

 gether, or projecting slightly through the granular inatrix, which is 

 perforated by rather large pores. 



This species was obtained in two slightly different forms whose 

 main features, however, are similar. Figs. 11 and 12 represent them 

 of natural size. The one in fig. 11 was dredged in 10 fms., and is a 

 deep purple color. The base is elliptical. The zoecia on the pe- 

 ripheiy are decumbent, while those in the center ai-e almost upright, 

 their tubular orifices projecting somewhat j^eyond the granular matrix 

 in which they are imbedded. At each end of the long diameter of 

 the base a number of zoecia have united to form a column. The 

 smaller of these is represented, somewhat enlarged, by fig. 13. Here 

 the column arises out of a forest of tubes so that its base is somewhat 



