ZOOLOGY OF THE BERMUDAS. 131 



The mesogloea is delicate, and is not dilated towards the base 

 as in C. ocellata, and in consequence, the basal canal is elon- 

 gated. Notwithstanding that the specimens were very much 

 macerated it was possible to perceive that a digestive area, 

 similar to that described as occurring in Z. flos-marinus, was 

 present, just below the stomatoda9um. No reproductive organs 

 were present. 



The stomatodaeum presented the pyriform, truncated shape 

 which has been described for other members of the genus. 



It seems not improbable that the form described by Hertwig 

 as C. lutea may be identical with this. Alcoholic specimens of 

 C. glareola show no trace of the coloration of the living forms, 

 but are of a universal sandy color. In the very slight prom- 

 inence of the polyps above the coenenchyma, in the structure 

 of the sphincter muscle, and in the slenderness of the mesen- 

 teries there is agreement between the two, and these are points 

 which will probably prove to be of systematic importance. 

 On the other hand, there is dissimilarity in the extent of the 

 incrustation by foreign bodies, in the pigmentation of the 

 endoderm, which is wanting in C. glareola, and apparently in 

 the extent of the development of the longitudinal muscles of 

 the mesenteries, which cannot be said to be well developed in 

 C. glareola. This last character is probably of importance, but 

 the first two are probably subject to variation depending upon 

 the conditions of life and the food. 



The evidence then, seems to be in favor of the identity of the 

 two forms, in which case the name here used has the priority. 

 It seems to me very doubtful, indeed, if Hertwig's identifica- 

 tion of the Bermuda form with Quoy and Gaimard's C. lutea 

 from the Feejee islands is correct. The only point of correspond- 

 ence, judging from the description and figures given by Quoy 

 and Gaimard,* is the slight prominence of the polyps above the 

 coenenchyma when in contraction. 



Gemmaria Rusei, Duch. and Mich. (PI. 11, figs. 7-9.) 



Gemmaria Rusei. Duchassaing and Michelotti. 1860. 



* Quoy and Gaimard, Zoologie du Voyage de la Corvette T Astrolabe. Paris. 1833. 



