168 LIVEEPOOL BIOLOGICAL SOCIETY. 



middle, to show the relations of the hepatic 

 caeca to the body and to the large turretted 

 cerata (cer.). S. 1. 



Fig. 2. Section through one of the papillae on the cerata 

 showing the small terminal knob {k.) and the 

 masses of gland cells (gl.). S. h 



Fig. 3. Section through the edge of one of the cerata 

 showing the large masses of gland cells lying 

 between the hepatic caecum {h.c.) and the epi- 

 thelium (ec). S. h 



Fig. 4. Section through one of the papillae on the cerata 

 showing a cavity and duct (d.) amongst the 

 gland cells and leading to the apex of the 

 knob (k.) S. h' 



Fig. 5. Section through the base of one of the cerata of 

 Facelina coronata, showing the opening of the 

 hepatic caecum into one of the lateral ducts of 

 the liver (Z.^.). S. 1. 



Fig. 6. Transverse section through the tip of one of the 

 cerata of F. coronata, showing the hepatic 

 caecum {h.c), cnidophorous sac (c.s.) and con- 

 necting tube (c.d.) all cut transversely. S. J. 



Fig. 7. Some of the long curved cnida of F. coronata, 

 S. h' enlarged. 



Fig. 8. Upper half of one of the cerata of F. drummondij 

 mounted entire, showing the long connecting 

 tube {c.d.) between the cnidophorous sac and 

 the hepatic caecum. S. 1, reduced. 



Fig. 9. Part of edge of one of cerata of F. drummondi, 

 from living specimen, showing the cilia on the 

 surface and the colours of the hepatic caecum. 

 S. i r, red ; y, yellow. 



