PLATE LXIII. 



LETTERING ADOPTED IN THE FIGURES. 



hr. en. mes., . . braohycnemic mesentery (the sulco- 

 sulcar lateral mesentery). 



cml., . . . . coelenteron. 



cu cuticle. 



decal., . . . lacuna due to the decalcification of 

 an incrustation. 



ect., . . . . ectoderm. 



ect. i., ... ectodermal hay. 



end., .... endoderm. 



end. can., . . endodermal canal. 



iner., .... incrustation. 



jnes. can. J 

 m. sph. m., 









s. d., 



s. gr., . 

 si. d., . 

 vert, can., 

 z., . . 





mesogloea. 



mesenterial canal. 



mesogloeal sphincter muscle. 



nematocyst. 



oesophagus. 



sulcar directive mesenteries. 



sulcar groove. 



sulcular directive mesenteries. 



vertical canal. 



zooxantheUa. 



Zoanthus julcesii, n. sp. (p. 678). Transverse section through the oesophageal region of the 

 4 



column, 



«* 10' 



Zoanthus macgillivrmji, n. sp. (p. 680). Transverse section through the lower portion of the 

 3 



column, 



(J* 8 



3. /««;MrMs <M5«r«<toj« (Gray), (p. 617 of Beitish ZoANTHE.a;). Section through an ectodermal bay, — 



B 



4. Isaurus asymmetricus, n. sp. (p. 684). Vertical section through a sphincter muscle, 



5. Isaurus 



a* 10 

 Transverse section through a portion of the centre of the base of the 



column, -=- , 



6. Isaurus 



ricus. Transverse section through the periphery of the body-wall, -jr. 



7. Gemmaria macmurrichi, n. sp. (p. 68B). Transverse section through the body -wall (decalcified), 



8. Palythoa howesii, n. sp. (p. 693). Transverse section through the body-wall (decalcified), -^. 



2 



9. Palythoa hochii, n. sp. (p. 694). Transverse section through the body-waU, -^. 



