287 



which form labyrinthic and cellular masses by concrescense of the single lobes 

 and laminate folds. 



Port Elizabeth, South Africa (Miss Jelly). 



This species is certainly closely related lo ^Schizoporella-^ biimin'dii Hincks', 

 which undoubtedly must also be referred to the genus Adeonelhi. 



Adeonella pygmaea n. sp. 

 (PI. XIV, li-s. Ij, 4 k). 



The zooecia very small, finely tuberculated, as a rule rounded hexagonally 

 or vase-shaped, with scattered pores. The primary aperture, which, in contrast to 

 what is found in the foregoing species, is only seen on quite a few zoojcia at the 

 end of the branches, has an approximately semicircular anter and its poster has 

 a broad, rounded sinus, which at its beginning is as much as two-thirds of the 

 whole breadth of the aperture. The operculum is wcll-chitinized. The secondary 

 aperture is semicircular in its final form, with a sometimes almost straight, some- 

 times somewhat convex proximal margin, and the small median ascopore, which 

 is placed in a depression, lies just as far from the aperture as the height of the 

 latter. 



Gonozooecia were not observed. 



The avicularia seem only to occur independently and each zocecium is 

 only j)rovided with a single, fairly elongated, pointed avicularium situated on the 

 outer (directed towards the corresponding lateral margin of the branch) side of 

 the zooecium, with as a rule its point directed obliquely inwards and towards 

 the aperture. 



The colonies are two-layered, free, branched, with narrow, compressed branches, 

 but the colonies examined, which are situated in large quantity and in very differ- 

 ent stages of development on a large colony of Ad. Jellyae, arc undoiditedly very 

 young, as the largest of them only has a length of g"""- and consists only of 

 four branches. Whilst the younger colonies are quite light in colour, the older 

 have a somewhat similar colour to that of the species on which they grow. Pos- 

 sibly they may be j'oung colonies of Ad. Jellyae. 



Adeonellopsis foliacea Mac Gill. 

 Trans, and Proc. R. Soc. Victoria, Vol. XXII, 188(i (for 1885), p. 134, PI. II, fig. 1. 



(VI. XIV, rif>s. r)a-.5(l). 



The zooecia finely tuberculated, covered by a grayish-black membrane, as a 

 rule rhombic, provided with scattered pores, which occur chielly on the marginal 



' ai, p. 2iio. 



