EXPLANATION OF PLATE XXVI. 



Qemmaria willeyi, sp. nov. 



Fig. 1. Transverse section through body-wall, x 100. 

 2. Vertical section through disc, x 220. 



Lithographed from drawings made by Mr. J. P. Hill. 



REFERENCE LETTERS. c. Cuticle, ect. Ectoderm, ect. c. Ectodermal 

 canal, ect. m. Ectodermal muscle cell. ent. Entoderm. gr. Sulcar groove. 

 incr. Incrustation. I. Lacuna, m. Mesogloaa. m. c. Mesenteric canal. 

 m. s. Mesoglceal sphincter, n. Nematocyst. CBS. (Esophagus, p. m. 

 Peripheral mesoglosa. pb. m. Parieto-basilar muscle, s. d. Sulcar direc- 

 tives, si. d. Sulcular directives, z. Zooxanthella. 



