Two new species of polynoids from the central part of the
P i c i f i c (Mt Vytyaz and M t Guyot) are described. Polynoe
uschakovi sp. no is associated with a gorgonarian Callogorgia
sp. and with a hydrocoral Allopora sp. It l i v e s on a gorgonaria
under s c l e r i t e s of polyps, on a hydrocoral - i n tubular "galls",
abnormal growths of walls of the coral. Harmothoe melanicornis
sp. n, is associated with another species of the genus Allopora.
It lives i n tubular "galls" similar to those of Po uschakovi,
In both cases the g a l l formation seem to be induced by
commensals. A bibliography of the Polychaeta symbionts of
Coelenterata is presented.