236 



DR. J. E. GRAY ON ZOANTHIN^. 



[Feb. 14, 



impressed longitudinal lines on the neck, where these pits are placed 

 in the specimen above described. 



The inner coat of the body is membranaceous, with sixteen mem- 

 branaceous folds, which extend to the base of the body ; the lower 

 part of the cavity is filled with vermicular cylindrical ovaries. 



The mouth of the outer case, which is much contracted in spirits, 

 is furnished with a single series of short tentacles. The laminge of 

 the stomach have a cartilaginous edge ; they extend to the base of 

 the cavity. 



The details of the anatomy are given in Professor Steenstrup's 

 ])apef, and he shows the darting stinging threads in the skin (fig. 8). 



Fig. 1. Pales clifhnii. 



2, 3, 4, 5. S2)he>wj)HS marsKjiialis. 



Sphenopus marsupialis. (Figs. 2, 3, 4, 5.) 



Sabella {die heutelformige Sabelle), Schroter, Einleit. Conch, ii. 

 p. 59l.no. 19, t. 6. f. 21. 



Sabella marsiqnalis, Gmelin, S. N. 3/51. 



Sphenopus marsupialis, Steenstrup, Oversigt Kgl. Dansk. Vidensk. 

 Selsk. 1856, p. 37, t. 1. f. 1-8 ; M.-Edwards & Haime, Coral, i. 28/. 



Hab. Tranquebar (Johns). 



The specimens here figured were collected at Pulo Faya, in the 

 China Seas, by Capt. Perry of the ship ' Richard Cobden,' who 

 has kindly presented specimens to the British Museum and to the 

 Free Museum at Liverpool. 



Yar. bursiformis. The body variable in shape (figs. 2-5), more 

 or less produced and compressed behind. 



Hab. Massachusetts Bay, U. S. America. B.M. 



2. SiDisiA, Gray, P. Z. S. 1858, p. 582. 

 Coral free, cylindrical, simple, or developing lateral basal buds, 

 aivine it a more or less branched form. 



