Trans. N.Z. INST., Vor. 54. ra 
Fic. 1.—Animal and plant formations between tide-marks, Takapuna. Above, 
Chamaesipho columna ; centre, Ostrea cucullata ; below, Corallina- 
Hormosira. 
Fic. 2.— Vermilia carinifera on reef in Auckland Harbour. 
