ONCHIDIIDAE FROM VICTORIA 173 



Onchidella patelloides (Q. and G., 1832). 



Onchidium patelloides Quoy and Gaimard, Voy. de V Astrolabe. 

 Zool. II, p. 212, 1832. " 



Tins species has recently been recorded from Lome, Victoria, 

 by Dakin (2) . The Museum has specimens collected by the author 

 from Point Addis and San Remo, and from Mrs. G. Van Rompaey, 

 who collected them at Wye River (also on the Otway Coast), and 

 at San Remo, in 1941. 



Onchidella patelloides is marine and differs from Oncliidina in 

 respect to its habitat. It is a rock dweller, found attached to the 

 underside of loose rock, and in crevices of rocky shore platforms. 

 In April, the Point Addis specimens were found at low tide mark, 

 which suggests that they are submerged always at that time of 

 the year. 



Some observations on the anatomy of these two species will be 

 described in a later paper. 



References. 



1 Bretnall, R. W. Onchidiidse from Australia and the South-Western 



Pacific Islands. Rec. Aust. Mm XII, pp. 303-328, 1919. 



2 Dakin, W. J. The True Sea-slug— Onchidium. Aust. Mus. Mag. IV, 



No. 4, pp. 141-144, 1947. 



3 Powell A. W. B. The Shellfish of New Zealand, p. 97, 1946. 



