BRYOZOANS FROM CHATHAM ISLAND 
Figs 100-103 Romancheinid cheilostomes. 100-101, Exochella? gracilis sp. nov., IGNS BZ 200, holotype; 100, zooids in bilamellar fragment, x 62; 
101, autozooid; probable avicularium at middle right of zooid, x 124. 102-103, Escharoides? crassa sp. nov., IGNS BZ 201, holotype; 102, disposition 
of thick-peristomed autozooids and adventitious avicularia, x 54; 103, x 30. 
part of the zooid where there is a high scoop-like peristome that 
surrounds a more-or-less distally facing secondary orifice. Primary 
orifice occluded by sediment, details not known. No oral-spine 
bases. Frequently an avicularium adjacent to one corner of the 
peristome, 0.18—0.24 mm long, elongate-oval with a rounded ros- 
trum that slopes steeply inwards to a narrow palate, the avicularium 
not as wide proximally; the preservation is inadequate to indicate 
whether there may have been a crossbar. Ovicells not present. 
REMARKS. The generic attribution is uncertain. The species is 
most reminiscent of Recent Escharoides angela (Hutton, 1873) 
which also has a conspicuous scoop-like peristome. The origin of the 
