454 HYDROID ZOOPHYTES COLLECTED BY DR WILLEY IX THE SOUTHERX SEAS. 



Genus. Campamdaria, Lamoiiroux (in part). 

 Campanularia hrevithecata, n. sp., PL XLIV. Fig. 8, 80, 8 6. 



Thi.s form has a simple, unbranched stem, a little more than 1 cm. in length, 

 very slender, with several rings at the base (Fig. 8 a) and one or two at intervals 

 up the stem, while directly below the hydrotheca there is one spherical ring as in 

 Campanularia volubilis, Linnaeus. 



The hydrotheca is extremely short, so as only to cover about one-third of the 

 polypite when it is extended, and has an even rim (Fig. 8). 



The polypite has about twenty tentacles, and a remarkably large trumpet-shaped 

 proboscis, suggestive of a Eudendrium from which the species is widely separated by 

 its other characters. 



The gonothecae (Fig. 8 h) present rise from the stolon on short pedicels, and 

 have the appearance of those of Campamdaria calicidata, Hincks, as figured by Hincks^ 

 and contain one or two large sporcsaes with four gastro-vascular canals to each. 



C. calicidata Hincks, as figured by Mr Bale^ has much the appearance of my 

 specimen, but without the polji^ite the proportional sizes of polypite and calycle are 

 not obvious. In some of ilr Bale's specimens from Port Jackson the calycles have not 

 the thickened wall usual in C. calicidata, which would bring it nearer to our form, but 

 there are still sufficient grounds for considering this a new species on account of the 

 smallness of the theca and the largeness of the polypite proboscis. 



Locality. Blanche Bay, New Britain, one colony covering the body of a Lepas, 

 others detached from ropes and fish-baskets. 



Genus. Gonothyraea, Allman. 



Gonothyraea longicyatha, n. sp., PI. XLIV. Fig. 4, 4 a. 



There are a large number of complete colonies of this strikingly pretty form. 

 Their height is about 3 cm., they are much branched, the main stem is deep brown 

 in colour, and offshoots from the bases of the pedicels of the hydrotheca, growing 

 downwards, form a strong compound stem (Fig. 4 0), as described by Dr Hartlaub^ for 

 Obelaria gelatinosa, and by Mr Bale'' for Obelia ? spinulosa. 



The hydrothecae are remarkably long and narrow, and the castellations on their rims 

 so deeply grooved as to make sharp, needle-like points of their edges (see Fig. 4). 



The gonothecae are very numerous, borne on short ringed pedicels in the axils 

 of the branches. The}' are oval and truncated at the top. In nearly all cases they are 

 flattened laterally, whicli makes the top fall in, forming a groove, but this is probably 

 a result of the pi-eservation of a delicate form. 



1 British Hydroid Zoophytes, 1868, PI. 31, Fig. 2 d. 

 - Proc. Linn. Soc. New South Wales, Vol. 111. 1888, p. 755. 

 ■■' Jleeresfauna von Helgoland 1897, Zweiter Bericht, Kiel. 

 ■* Proc. Linn. Soc. New South }]'ales'. Vol. iii. p. 756. 



