.vo. 1933. BRYOZOA FROM EASTERN SORTH AMERICA— OSBURS. 279 



MEMBRANIPORA CYMB^FORMIS Hincks. 



ifembranipora spinifera Vebrill, 18796, p. 29. 



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

 Shoal Tickle, Labrador, rare. This species seldom grows attached 

 to shells or stones, but is usually found on the stems of hydroids or 

 on other Bryozoa. The dorsal side of the fronds of Bugula murrayana 

 seems to be a favorite locahty. The colonies are never large, seldom 

 over one-fourth inch across. 



MEMBRANIPORA SERRULATA (Busk), 

 Flustra serrulata Whtteaves, 1901, p. 95. 



Localities. — Southeast of Burin, Placentia Bay, Xewfoimdland, 

 rare; outside of Hebron, Labrador, rare; halfway from Mugford to 

 Hebron, Labrador, rare; Egg Harbor, Labrador, rare; Shoal Tickle, 

 Labrador, several colonies. 



This species was placed in the genus Flustra by Busk because of 

 its habit of assuming an erect form. It is never flexible, however, 

 and it often grows attached hke other Membraniporas, and both 

 conditions are frequently exhibited by the same colony. One speci- 

 men wa-s found encrusting the back of a Flustra carhasea and others 

 on erect colonies of Escharoides and Porella, encrusting as a single 

 layer on the stems or reaching in a bilaminate form from one branch 

 to another. 



MEMBRANIPORA TRIFOLIUM (S. Wood). 



ifembranipora solida Packakd, 1867, p. 272. 

 Mollia flemingii var. soJida Yerrux, 18796, p. 29. 



Locality. — Shoal Tickle. Labrador, two colonies on pebbles. 



MEMBRANIPORA UNICORNIS (Fleming^ 



Locality. — Shoal Tickle, Labrador, several small colonies. 



MEMBRANIPORELLA CRASSICOSTA Hincks. 



Locality. — Shoal Tickle, Labrador, several small colonies. 



CRIBRILINA ANNULATA (Fabridus). 



Cellepora annulata Fabricius, 17S0, p. 436. 



Lepralia annulata STiiTPSox, 1853, p. 18. — Packard, 1867, p. 270. 



Escharipora annulata "Whtteaves, 1874, p. 11. — RixK, 1877, p. 443. 



Locality. — Fourteen miles south of Cape Sable, one colony on shell. 



MICROPORELLA CILIATA (Pallas). 



Lepralia dliata Packard, 1867, p. 270. 

 Porina dliata Rixk, 1877, p. 443. 



Porellina dliata. —Smttt, 1873, p. 26.— Yerrux, 18796, p. 29 

 Porellina st^llata Verbill, 1879a, p. 53; 18796, p. 29; and 1880, p. 190 (=a va- 

 rien.' of M. dliata). 



Locality. — Shoal Tickle, Labrador, one young colony on pebble. 



