BRYOZOANS FROM CHATHAM ISLAND 
e*) 
Ww 
The - ae 
Wark Noh 
2 gabe v1 
ate 
Figs 82-86 Cellariid cheilostomes. 82-84, Smitticellaria morioriana sp. noy., IGNS BZ 196-1, holotype; 82, part of colony, position of vicarious 
avicularia arrowed, x 48; 83, ovicellate orifices, x 209; 84, axillary vicarious avicularium, x 169. 85-86, ?Escharicellaria sp., IGNS BZ 215; 85, 
presumed small colony, x 22; 86, autozooidal orifice, x 173. 
to a rounded condylar process; a pair of distal condyles opposite the 
proximal ones. Generally a transverse groove parallel to the proxi- 
mal rim of the opesia-orifice. Vicarious avicularia mostly occurring 
at the bifurcation of a zooid row, sometimes merely replacing an 
autozooid in a longitudinal series, 0.46—0.52 mm long and 0.21— 
0.26 mm wide; in the best-preserved examples they are 
granular-surfaced, widest at mid-length, with the rostrum parallel- 
sided before abruptly tapering acutely, the proximal end rounded; 
with a subtrifoliate palatal foramen and a very small circular or oval 
opesial foramen. Ovicells large, slightly recumbent on the distal 
zooid, the ovicellular chamber deep though not reaching the level of 
the basal walls of the maternal and distal zooids; frontal surface 
