550 Annals of the South African Museum. 



Sample 44 (rare). 



This species, of which only few individuals were seen, evidently 

 belongs to the group of species comprising E. coralloides, Joshua, 

 E phsiocoralloides, W. & CI. S. West, E. trigiblerum, W. £ G. S. 

 West, and E. geometricum, W. & G. S. West. All of these are 

 characterised by the deep incisions between the polar and the lateral 

 l,,bes. often accompanied by a rather deep apical incision, rendering 

 the semicells more or less markedly 4-lobed, a feature whirl, is not so 

 well seen in the present species. The differences between E. pseudo- 

 coralloides ami the other species just enumerated are sufficiently 

 obvious without special mention, in particular the smooth membrane 

 and the characteristic side- and end-views are very distinctive. Another 

 very marked feature is the shape of the upper lateral and apical 

 lobules; the lower lateral lobules appear to be merely truncated 

 (Fig. 25, a). The semicell shown in Fig. 25, d either represents a 

 simplified form of E. pseudocoralloides or, more probably, an immature 

 stage. The extent of development of the apical undulations is, 

 however, certainly subject to some slight degree of variation. 



Genus COSMARITJM Corda. 



1. Comarium granatvm, Breb.; W. A G. S. West. op. cit., ii, 1905. 



p. 186, PI. LXIII, figs- 1-3- 



Samples 39, 45 (rare). 48 (very rare), 52 (very rare). 

 Long,, 27-35 p ; lat., 20-27 p ■ lat. isthm., 5-7 p. 



2. Gosmariwm pseudatlanthoideum,V?est; W. & G. S. West, op. cit, 

 ii, 1905, p. 191, PI. LXIII, tigs. 16, 17. 



Sample 39. 



Lono- 24-25/x; lat.. 18-19; lat. isthm.. 6 p. 



The dimensions are rather larger than usual, but the form of the 

 cells was exactly as in Fig. 17 in Messrs. West's monograph. This 

 species conies very close to some forms of C. granatum, Brcb. ; cf. also 

 0. aeguale, Turner, which, however, has a different end-view and is 

 larger. 



3. Cosmarium capense, De Toni, Sylloge Algarum, etc i, 1899, 

 p q6 c » (Syn • C. pyramidatum, Breb., subsp. capense, Nordstedt. 

 De Alg. nonnull., praecipue Desm., etc.. Act. Univ. Lund., xvi, 1880, 



p. 6, Tib. I, fig. 8.) „„,<.•*! 



Var. nnnor, nov. var. ; Long., 45-54 p ; lat.. 33-36/,; lat. isthm.. 

 11-12 /x; crass., 24 27 p. Semicellulae a vertice visae elhpticae, axis 



