NO. 1933. BRYOZOA FROM EASTERN NORTH AMERICA— OSBTJRN. 285 

 PORELLA PROBOSCIDEA Hincks. 



Porella proboscidea Hincks, 1888, p. 223. 

 Eschara verrucosa Rink, 1877, p. 444. 

 Porella verrucosa Verrill, 18796, p. 30. 



Localities. — Fourteen miles south of Cape Sable, a few colonies on 

 hydroid stems; Shoal Tickle, Labrador, several colonies. At the 

 latter place occurred one colony the form of which resembled that of 

 of Porella saccata, but the zooecia were typical of prohoscidea. This 

 species usually grows on hydroid or other stems and seldom on rocks 

 or shells, and assumes a more or less erect, irregularly folded, frill-like 

 form. In the variation above mentioned the colony is branching 

 and the divisions are ligulate. 



PORELLA SKENEI (Solander). 



Lepralia crassispina Stimpson, 1853, p. 18. 



Eschara sheneiWrnTEXVES, 1874, p. 11. 



Discopora skenei Rink, 1877, p. 444. 



Discopora sJcenei Siud var. crassispina Verrill, 18796, p. 30; 1880, p. 194. 



Palmicellaria skenei Bidenkap, 1905, p. 27. 



Localities. — Forty miles west by south from Cape Sable, one col- 

 ony; 14 miles south of Cape Sable, several; Browns Bank off Cape 

 Sable, 1 colony. 



This species is placed by many authors in the genus Palmicellaria, 

 but its relations seem to the ^vriter closer to Porella, in which genus 

 Hincks has placed it. Both erect and encrusting stages of the spe- 

 cies occur in the collections. 



PORELLA STRUMA (Norman). 



Localities. — Fourteen miles south of Cape Sable, several colonies; 

 Browns Bank ojff Cape Sable, several colonies, some more than an 

 inch across and all encrusting. 



PORELLA PROPINQUA (Smitt). 



Porella verrucosa var. propinqua Verrill, 18796, p. 30. 

 Smittia propinqua Bidenkap, 1905, p. 26. 



Localities. — Forty miles west by south from Cape Sable, one colony; 

 14 miles south of Cape Sable, several colonies; Browns Bank off 

 Cape Sable, one colony. 



This species is another that has been shifted about from Porella to 

 Smittia and back again according to the opinion of the author. The 

 present writer prefers to place it tentatively in the genus Porella on 

 account of the round oral avicularium. 



SMITTLA PORIFERA (Smitt). 



Escharella pori/era Rink, 1877, p. 444. 



Smittia landsborovii var. porifera Hincks, 1888, p. 225. 



Localities. — Fourteen miles south of Cape Sable, rare; Shoal Tickle, 

 Labrador, one colony encrusting a pebble. 



