PLATE LX. 



LETTERING ADOPTED IN THE FIGURES. 



CM., .... cuticle. 



ect., .... ectoderm. 



enc. sin., . . encircling sinus. 



end endoderm. 



end. sph. m., . endodermal sphincter muscle. 



incr., .... incrustation. 



m mesogloea. 



m. en. mes., . macrocnemic mesentery (the sulco- 



sulcar lateral mesentery) . 



ffl. /., ... mesenterial filament. 



m. sph. »!., . . mesogloeal sphincter muscle. 







ws. >:, 

 p. b. m., 

 r. ect., . 

 r. end., . 

 r. m., 

 s. d., 

 si. d., 

 s. fft:, . 

 sp. . . 





nematocyst. 



oesophagus. 



oesophageal ridge. 



parieto-basilar muscle. 



reflected ectoderm. 



reflected endoderm. 



retractor muscle. 



sulcar directive mesenteries. 



sulcular directive mesenteries. 



sulcar groove. 



sperm-cell (testis). 



Fig. 



1. Epi%oanthus incrustatiis (Diib. & Kor.), p. 636). Transverse section through the oesophageal region 



4 



of the column, — r — -. 

 ' a* 10 



2 



2. Epizoanthus wrigUii, n. sp. (p. 651). Vertical section through the sphincter muscle, -^.^ 



2 



3. Epkoanthus couchii {Johnst.), (p. 644). Vertical section through the sphincter muscle, — . 



2 



4. Epizoanthus aretiaceus (D. Ch.), (p. 649). Vertical section through the sphincter muscle, — . 



4 



6. Epizoanthus pagiiriphilus, Verr. (p. 641). Transverse section through a fertile mesentery, ^ . 



6. Parazoanthus axinellce (Schmidt), (p. 654). Transverse section through the oesophageal region of the 

 4 



column, 



«* 10" 



7. Parazoanthus axinellce. Transverse section through a fertile mesentery. 



8. Parazoanthus dixoni, n. sp. (p. 658). Vertical section through the sphiacter muscle, 



B' 



9. Parazoanthus dixoni. Transverse section through a perfect and an imperfect mesentery, 

 * These letters of magnification refer in all eases to Zeiss' system. 



