92 



A distinct cup is usually present at the base of the hydranth 

 (see Plate IV. a). 



Gonophores in May, June and September. 



2.* CORYNE VAN-BENEDENII, Hincks (?). 



In the trawl net of the " Raider," 1911, 40 fathoms east of 

 Coquet Island, growing on Cellepora avicularis. 



Gonophores : July. 



Species doubtful, as the specimens obtained (in spirit) were 

 poor and shrivelled, and it was impossible to identify them with 

 certainty. 



3. SYNCORYNE EXIMIA (AUman). Coryne listeri, Van 



Beneden. 



Very abundant. Alder. 



In pools at CuUercoats, not very common. 



The larval sacs of the Pj^cnogon, Phoxichilidium femoratum 

 were observed on one colony of 8. eximia, with larvae very well 

 developed in October. 



4. * SYNCORYNE GRAVATA (T. S. Wright). 



A small colony growing on a bottle brought by a boat from 

 21 J fathoms east by south of Marsden, Durham. 

 Gonophores : developing in February. 



5. SYNCORYNE SARSII, Loven. 



On Laminaria roots, CuUercoats ; rare. Alder. 



At the begmning of May I found in a shallow pool a colony of 

 Syncoryne sarsii bearing the interesting type of gonozooid described 

 by Agassiz in connection with 8. gravata, and by Loven with 8. 

 ramosa, Ehrenberg {8. lovhii, Sars.) and 8. sarsii. 



Instead of the normal medusoid with its globular bell, four 

 long tentacles and short manubrium, the medusiform bodies were 

 ovate, with a long manubrium (reaching to the base of the bell) 

 inflated with ova, and the tentacles were represented by small 

 pigmented bulbs (Plate III.). 



The zooids were borne sometimes at the base of the polypite 

 (which never appeared partially atrophied) sometimes quite 

 solitarily at the end of a long stalk, in which case there was no 

 trace of any polypite. They pulsated most actively, but I have 

 never observed them to drop off and swim away, and have come 



