196 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



vertically from the basal membrane, with accessory 

 shorter, generally entirely spined monactinals. Megas- 

 cleres of the ectosome of varying character. No micros- 

 cleres (?) 



Note. Topsent (18, p. 109) places H. radiata under 

 the genus Myxilla. 

 Hymeraphia clavata, B., XXVI. 



,, coronula, B., LXXIX. 



,, indistincta, B., LXXXYII. 



,, paupertas, B., XXXYII. 



radiata, B., XXYIII and XXIX. (Top- 

 sent, 18, p. 109). 

 ,, simplex, B., LXXX. 



,, verticillata, B., XXVII. (Carter, 1, p. 



321.) 

 Genus Baspaila, Nardo. 

 Sponges typically whip-like, with a dense central axis 

 of spiculo-flbre containing much spongin, from which 

 loose tufts of spicules radiate to the surface. Megascleres 

 usually monactinal. Echinating spined styli always 

 present. No microscleres. 



Note. Topsent (20, p. 13) states that some species of 

 Baspailia possess asters, referring apparently to 

 Dictyocylindrus stuposus, B., D. fascicularis, B., 

 and similar forms. I prefer to include the same 

 under Axinella, as they do not possess echinating 

 spined styli. Spongia rigida, Montagu, described by 

 me (8, p. 213) under the name Baspailia rigida, M., 

 would now also come under Axinella. 

 Baspailia aculeata, B., XXI. 



,, hispida, Mont., XVII. 

 ,, hoicsei, B., XIX. 

 ,, pumila, B., XIX and XXL 

 radiosa, B., XX. 



