192 TRANSACTIONS LIVEEPOOL BIOLOGICAL SOCIETY. 



,, robertsoni, B., 4, V. 



b. with isochelse only : 

 Bendoryx dickiei, B. XLY. 



lurida, B., LYIII and LXXXII. 

 „ rugosa, B., XCI. 



c. with anisochelae and sigmata : 

 Dendoryx ingalli, B. , XL VI. 



d. without microscleres : 



Bendoryx dujardini, B., XXXVIII. (Topsent, 18, 

 p. 99). 



2. Ectosomal megascleres monactinal, smooth : 



a. with isochelse only : 

 Bendoryx batei, B., XL VI. 



,, fimbriata, B., LVIII. 

 ,, virgea, B., 4, V. 



3. Ectosomal megascleres diactinal, terminally spined : 



a. with anisochelae only : 

 Bendoryx expansa, B., LXXIV. 



„ patter soni, B., XL VI. (Ridley and Dendy, 

 14, p. 117.) 



b. with sigmata only : 

 Bendoryx pulchella, B., XL VI. 



4. Ectosomal megascleres monactinal, terminally or 



entirely spined : 



a. with isochelse and sigmata : 

 Bendoryx tumulosa, B., XCII. 



b. with sigmata only : 

 Bendoryx Candida, B., XLIV. 



Genus Iophon, Gray. 

 Soft, crumbling sponges, of dark colour. Megascleres 

 of the ectosome diactinal, those of the choanosome spined 

 styli. Microsceleres anisochelae and bipocilli. 



Iopho?i nigricans, B., XLV. (Topsent, 18, p. 98.) 

 ,, implication, B., 4, XVI. 



