20 ZOOPHYTA. 



wart-like tentacles : egg-germs globose, on branched 

 foot-stalks, clustered around the base. 



M. arctica. Fig. 25. 



Coryne (Gaertner). Simple or branched ; naked 

 or inclosed in a rudimentary tube ; tentacles having 

 globular tips ; mouth terminal, expansile, and 

 capable of being used as a sucking disk; egg- 

 germs simple, on short stalks. 



C. pusilla. C. stauridia. 



ramosa. Cerberus. 



sessilis. Fig. 26 ; 3_°. 



Eudendrium (Ehr.). Inclosed. Corallum fibrous- 

 rooted, erect, branching. Polypes protruding from 

 the tips of the branches, not retractile, bearing a 

 single circle of thread-like tentacles. 



E. ramosum. Fig. 27 ; n. s. and mag. 

 1 rameum. 



Tubularia (Linn.). Inclosed. Corallum un- 

 branching. Polypes bearing 2 circles of thread- 

 like tentacles ; egg-germs on short foot-stalks, clus- 

 tered at the basis of the lower tentacles. 



T. indivisa. Fig. 28. T. gracilis. 



Dumortierii. polyceps. 



larynx. 



Corymorpha (Sars). Partially inclosed. Co- 

 rallum short, thin, membranous, swollen at the 

 base, which is plunged into the sand of the sea- 

 bottom. Polype single, with the summit club- 

 shaped; a circle of long thread-like tentacles 

 around the base of the head, and a circle of short 

 ones around the tip. 



C. nutans. Fig. 29. 



? (Johnston's Zooph. 2d Ed. p. 463.) 



