
CORRECTION. 
Dr. Hanitsch wishes to state that the new Sponge described 
in his report on p. 169, and figured on plate vii., under the name 
of Seiriola compacta, really consists of two separate Sponges, a 
Stelletid and an incrusting Suberite. The former is, however, 
the type of a new genus closely allied to Stryphnus, Sollas, and 
for it the name Seiriola may be retained. The family Seiriolidez 
must lapse. A revised description of the genus and species will 
be given in a future paper. 

