SYNCORYNE GRAVATA. 53 



little distinct ammlatioii on the polypary, but towards 

 the base there is always a certain amount of rather 

 irregular ringing, and here and there it is more or less 

 strongly wrinkled. The upper part is generally smooth. 

 The polypite is ovate above, and produced below. The 

 polypary only extends to the base of a long neck, on which 

 the tentaculiferous portion of the body is supported. The 

 line of junction is very distinctly marked. 



The erect and comparatively simple habit, the annulatcd 

 stem, and the form of the polypite distinguish this species 

 from the C. VanBenedenii. It is also of larger size. 



As Agassiz has suggested, the Syncoryna ramosa (Loven) 

 (S. Lovcnii, Sars*) is probably only the phase assumed 

 by the S. Sarsii towards the close of the breeding-season. 



Hub. Firth of Forth (T. S. W.) : Seaham Harbour, 

 Durham, on Antennularia, from 25 to 30 fath. (G. Hodge) . 



[The Cattcgat (Loveii) : Island of Floroe (Sars) .] 



3. S. GRAVATA, T. S. Wright, 



CORYXE GRAVATA, Wright, Observat. on Br. Zooph. Ed. New Phil. Journ. for 



April 1858, pi. vii. fig. 5. 

 S utsiA .MIRABILIS (the sexual zooid), Agassi;, Mem. Ainer. Acad. of Arts and 



Sciences (I860), iv. part ii. 224, pi. 4. 5. 



CORYNE SUHABILIS, Agassiz, N. H. U. S. iv. 185, pi. xvii. (vol. iii.). 

 TUBULARIA STELLIFERA, Couth. Boston Jouru. N. H. ii. 56. 



Plate X. fig. 1. 



STEM smooth, simple or slightly branched; POLYPITES 

 small, slender, with 16 tentacles in the adult state; 



* The Syneoryna Loven ii of Van Bciieden ( Kecli. isur la Faune Litt. de Bel- 

 gique, p. 121, pi. v. figs. 6, 7) is a totally distinct species ; it.s polypites are 

 of great length, and have many whorls of tentacles. It may be our ('m-i/m- 

 pusilla, but I confess myself unable to identify with certainly any of tin' 

 species of Syncoryne described in the above work. 



