HYDROID ZOOPHYTES COLLECTED BY DR WILLEY IN THE SOUTHERN SEAS. 455 



I have only seen one external capsule, and that is not perfect, but unfolding tentacles 

 can be seen on the uppermost sporosac in several of the gonothecae. 



This description agi-ees with that of Gonothyraea hyalina, Hincks', to some extent, 

 but here there is the fascicled stem, and the hydrothecae, as well as the points on 

 their turrets, are moie drawn out, while their total size is less. If what appears to be 

 an external capsule is in reality an escaping medusiform zooid, the species may be 

 an Ohelia. 



Ohelia longicyatha, AUman-, is like the present species in the shape of the hydrothecae, 

 but not in that of the teeth on their margins. Campanulana ? spinulosa, Bale^ agrees 

 in the shape of the hydrotheca and its teeth and in the polysiphonic stem, and as 

 gonothecae have not been found for this form it is possibly this species. From the 

 description by Mr Clarke of Ohelia hidentata* it is evidently a much larger species 

 than this. 



LOCALITV. Blanche Bay, New Britain : from floats and ropes attached to fish- 

 baskets, some from a depth of .50 fathoms. 



Family. Sertulariidae, Hincks. 

 Genus. Sertularia, Linn^ (in part). 



Sertularia pusilla, n. sp. 



This is a minute species, only 3 mm. in height, and looking in all ways 

 only half the size of the Pasythea quadridentata, Ellis and Sol., amongst which it is 

 growing. 



The opposite hydrothecae join each other in front and are separated behind. 

 They are very long and slender, and delicate looking, as are the internodes which 

 bear these one pair on each. The polypites show almost black through the transparent 

 polypary. 



Locality. Lifu, Loyalty Islands. 



Sertulana littoralis, u. sp. 



There are several specimens of a little Sertularia of a bright brown colour, looking 

 like S. pumila, Linnaeus. They are smaller than that form, however, being only 7 mm. 

 in height, and with the branches in the one specimen that has any, alternate instead 

 of opposite. These are placed on the internodes, below the hydrothecae of three 

 successive internodes, beginning on the third from the base. The hydrothecae are 



> British Hydroid Zoophytes, 1868, p. 184. 



2 -'Report on the liydroida collected during the exploration of the Gulf Stream," by L. F. de PourtalSs. 

 Memoirs Museum of Comparative Zooloyy, Harvard University, Vol. v. (1877), p. 10. 



= Proc. Linn. Sac. ^'eu■ South Wales, Vol. in. 1888, p. 756. 



•• "Description of new and rare Hydroids from the New England coast." Transactions of the Connecticut 

 Academy of Arts and Sciences, Vol. in. Pt. 1. 



61—2 



