188 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



d. Sub-family Gelliodin^e. 



None. 



e. Sub-family Phlc30DICTYIN2E, Eidley and Dendy. 

 Massive Sponges with a thick rind and fistulous 



appendages. Skeleton of the choanosome consisting of 

 spiculous fibres. Megascleres oxea. Microscleres (if 

 present) sigmata. 



Genus Oceanapia, Norman. 

 With microscleres. 



Oceanapia robusta, B., LXII. (Eidley and Dendy, 

 14, p. 36.) 



Family II. Pcecilosclerid^e, Topsent. 

 Skeleton more complicated. Megascleres typically 

 monactinal. Usually with microscleres, typically chelae. 



a. Sub-family Esperellin^, Eidley and Dendy. 

 Skeleton fibres not echinated. Megascleres of the 

 ectosome not differing essentially from those of the 

 choanosome. 



Genus Stylotella, Lendenfeld. 

 Skeleton reticulate. Primary fibres multispiculous. 

 Megascleres chiefly styli. No microscleres. 



Note. Topsent, (18, p. 135) established the genus 

 Stylinos for the undermentioned forms (except S. 

 inomata), but dropped it again (20, p. 6) on finding 

 that Stylotella, Lendenfeld, was identical with and 

 prior to it. 



Stylotella columella, B., LXXVIII. (Topsent, 18, 



p. 136.) 

 „ incognita, B., LXXXV. 



,, inomata, B., LXXXIIL 



,, pannosa, B., LXXXIX. 

 ,, simplicissima, B., X.C. 



„ uniformis, B., LV. 



