General History of the Marine Pohjzoa. 283 



Smittia, Ilincks. 



Smittia reticulata^ J. MacGillivray, var. 

 (PI. IX. %. 2.) 



The variety of this species in which the aviculariuni is 

 much elongated, with a slender mandible rounded at the 

 extremity and placed on one side of the sinus, and often at 

 some distance from it, instead of immediately under it, has 

 been noticed in a previous portion of this series (' Annals ' for 

 August 1881). 1 now add a figure of it. Occasionally the 

 aviculariuni is placed diagonally (as represented) ; more com- 

 monly it is straight. I am inclined to tliiuk that this form 

 may be identical with 8. reticulata, var. ophidiana, noticed by 

 Waters in his ' Bryozoa of the Bay of Naples ' (1879). 



This species has a very wide range of distribution. 



Smittia Landsborovii, Johnston, form personata. 

 (PI. IX. %s. 3', 3.) 



A variety of this species occurs amongst Mr. Wilson's 

 dredgings in^ which the cells bearing ooecia exhibit a 

 curious peculiarity. The peristome (whicii is much raised) 

 gives otf two arms in front, which meet and unite 

 across the orifice, leaving a circular opening below, within 

 which the aviculariuni is visible. A similar variety of 

 Microporella ciliata Busk has described as Lepr alia personata, 

 and this name may appropriately be given to corresponding 

 varietal forms. I have already noticed an Australian variety 

 of this species ('Annals,' August 1881), which exhibits the 

 same structure and is also distinguished by its rich purple 

 colour. The present variety may stand as form personata, 

 and the latter as form personata, var. purpurea. 



In some cases the characteristic circular aviculariuni is re- 

 placed by one of spatulate figure, and this occasionally 

 assumes gigantic proportions, occupying a large portion of 

 the front of the cell (PJ. IX. %. 3). In British specimens a 

 large spatulate form is commonly associated with the ooecium, 

 placed transversely at the side of it. 



In one instance a colony has occurred (amongst the 

 dredgings from Port Phillip Heads) in which a minute spatu- 

 late avicularium takes the place universally of the usual 

 form. 



Smittia trispinosa, Johnston, vars. (PI. IX. figs. 4,5.) 



This species, as represented in the Australian seas, is 

 remarkable for the number and variety of its avicularian 



