HYDROZOA — RITCHIE. 815 



Hincksia tincta, L. Agassiz, Cont. Nat. Hist. U.S. (2), iv,, p. 355., 

 Stations 36 and 54. 



The specimens I have referred to this species possess no trace 

 of gonosome. Although the characters of the trophosome agree 

 with those of this specie.s as described by authors, and especially 

 with those of specimens described by Dr. Warren from Natal, 

 there is so.gre^t a S;imi),atity between. this trophosome and that 

 of typical examples of Campmiularia volubilis (Linn.), that, 'in 

 the absence of the gonangium, I hesitate definitely to decide. 

 These specimens, while they vary considerably as regards the 

 character of tiie peduncle, generally show more definite undula- 

 tions or twistings than most authors desciibe, these reaching in 

 some cases even to the base ; in this respect they resemble 

 Warren's specimens. The teeth of a hydrotheca vary in number 

 from eleven to thirteen. 



Dimensions. — ' ' 



Peduncle, length 0"35-l*22 mm. 



,, diameter O'05-O 07 mm. 



Hydrotheca, depth 035 0-42 mm. 



„ diameter at mouth... 0-18-0-28 mm. 



The dimensions of parts agree sufficiently closely with those 

 calculated from Hincks' figure, and with those given by Warren, 

 but they are much smaller than Bale's figures imply, and they 

 are also considerably smaller than Vanhofi'en's .specimens from 

 the Antarctic, and than specimens I have recorded from the 

 Falkland Islands. 



Localities.— (jvov/mg on Sertularella adpressa from Station 36, 

 off Botany Bay, one mile from shore ; depth, 23 to 20 fathoms ; 

 bottom, sand to rock; 11th March, 1898. Also growing on 

 Thuiaria sinuosa from Station 54, within Jervis Bay ; depth, 10 

 to 11 fathoms; bottom, seaweed and sand ; 20th March, 1898. 



Previous Australian records are: — Australia, "collected in 

 the neighbourhood of Melbourne and Geelong " (Hincks) ; Port 

 Phillip and Portland (Bale). 



CLYTIA ELONGATA, Marhtanner-Turneretscher . 



IClytia elongata, Marktanner-Turneretscher, Ann. K.K. Hof.- 

 mus. Wien, v., 1890, p. 1215, pi. iii., fig. 11. 



Clytia elongata, Warren, Ann. Natal Govt. Mus., i., 1908, p. 339, 

 text tig. 20. ■ 



Creeping on a Polyzoon is a stolon from which spring rare 

 simple Campanularian stems. The stems are as a rule compara- 

 tively short, for tliey frequently scarcely exceed the length of the 

 hydrotheca. A variable number of rings mark the top and base 



