■^^^^^ 1^ oh cri son.— In cm sting Bryozoa. 



291 



i*ouiided cibove, the lower margin almost entirely occupied by a 

 wide shallow sinus (pi. 20, fig. 46) ; peristome thin, moderately 

 raised, sometimes extended in front beyond the sinus. OoRcia 

 (fig. 47) abundant, large, covering two-thirds and often more of 

 the zooecium above ; oral arch high, ooeeial wall covered with gran- 

 ular ridges radiating from the oral arch; generally punctured 

 around the base. Avicularia none. 



This species described by Hincks from Queen Charlotte Is- 

 lands, is common in Puget Sound and on the coast of California 

 as far south as Coronados Islands, at which place it has been 

 dredged at a depth of 18 fathoms. Abundant on the shore at 

 Pacific Grove, California. Pound also as far north as Sitka, 

 Alaska. 



60. Schizoporella linearis Hassall, subsp. inarmata Hincks. ' 



PI. 20, fig. 48. 



Schizoporella linearis form inarmata Hincks, 1884, vol. 13, p. 212. 

 Lepralia linearis, Waters, 1879, vol. 3, p. 38, pi. 9, fig. 2. 



Zoarium incrusting shell of barnacle. Zocecia rhomboidal, 

 disposed in linear series, separated by distinct lines, or sometimes 

 confluent, and forming a uniform crust (pi. 20, fig. 48) ; front 

 wall flat, nodulous, or covered with anastomosing ridges, and 

 punctate, or enveloped in a granular crust ; orifice orbicular, per- 

 istome raised, a sinus on the lower margin. Oaecia globose, promi- 

 nent, thickly punctured, anastomosing lines proceeding from a 

 median line extending from the oral to the distal rim. 



The sub-species inarmata ditfers from the ordinary form 

 mainly in the lack of avicularia which in the typical 8. linearis 

 are found on each side of the orifice. 



Reported by Hincks from Queen Charlotte Islands. Ob- 

 tained at one station on the west side of the island of Santa 

 Catalina dredged in 45 fathoms. 



61. Schizoporella longirostrata Hincks. 



PI. 20, fig. 49. 



Schizoporella loiigirostrata Hincks, 1883, vol. 11, p. 447 pi 15 

 fig. 4. 



Zoarium forming a delicate white crust over shells of barna- 

 cles, etc. Zoacia large, ovate, moderately convex, surface "ran- 



