BY W. M. BALE. 755 



CAMPANULARIA CALICULATA, Hincks. 

 (Plate XIII., tigs. 1-3). 



Two gatherings of this species have been obtained from Port 

 Jackson, iii one of which the calycles are for the most part wholly 

 without the thickened wall which usually characterizes the species; 

 occasionally however they conform to the type. In the other 

 specimens, the calycles agree pretty closely with those figured by 

 Mr. Hincks, and vary to about the same extent. The peduncles 

 are exceedingly variable in length, sometimes being 16-18 times 

 the length of the calycle. They may be closely undulated through- 

 out, or almost smooth, the latter condition occurring principally in 

 the longer peduncles. The gonangia contain two sporosacs, and 

 are borne in extraordinary profusion, their number often greatly 

 exceeding that of the hydrothecae. 



CAMPANULARIA CALICULATA, var. makrogona, von Lendenfeld. 

 (Plate XIII., figs. 4-8). 



In this variety the hydrotheca-wall is thickened throughout, 

 but more particularly at the base, and at the upper portion, 

 where the chitinous substance forms an external band encircling 

 the upper ^ or J of the calycle, very thick in the centre, and 

 gradually thinned away above and below. In most of the hydro- 

 theca? the cavity is exactly cylindrical, with a flat floor, but in 

 some of them the internal diameter slightly diminishes downward. 

 The margin is somewhat everted, and often becomes doubled or 

 trebled by successive circles of growth. The peduncles are stout 

 and usually very strongly undulated. 



I am not aware whether the very large gonangia characteristic 

 of this variety are always associated with the peculiar form of 

 hydrothecse which I have described ; if so, it may be questioned 

 whether there is not sufficient ground for separating this form as 

 a distinct species. 

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