EXPEDITION ANTARCTIQUE BELGE 



This is somewhat like the Lepralia impressa of Reuss (') ; and only differs from my 

 Smittia anceps ( 2 ) from Curdies Creek (S. W. Vict.), in having no oral avicularium, but I 

 now think a mistake was made in considering the fossil to be the anceps of MacGillivray. 



Habitat. — Exp. Antarct. Belge. 



N° 683, Tangles VIII. Lat. 70 00' S.- Long. 8o° 48' W. ; 5oo ? met. ; -f 0.9 C; 3 pièces. 



N°ggi, Tangles VIII. Lat. 70 00' S.- Long, 8o° 48' W. ; 5oo ? met.; +0.9C; 1 pièce. 



Smittia crassatina sp. nov. 



PI. IV, fig. 9; PI. III, fig. 7) 



Zoarium incrusting. Zoœcia very large, not much raised (just under i mm in length), 

 ovate to hexagonal, distinctly divided by a thin ridge, having moderate sized pores on each 

 side of the ridge ; surface with numerous large pores ending in small pits. The rounded oral 

 aperture is surrounded by a thick border or peristome, sinuate on the lower edge, so that 

 on casual examination the species might be taken for SchizoporcIIa, there is however a narrow 

 médian denticle (lyrula) within the aperture. There are ovicells on spécimen 288, but being 

 broken clown it is difficult to distinguish the characters, however they are small, much raised 

 and perhaps there has been an area in front. 



N° 277 was drawn as SchizoporcIIa but further cleaning has shown it be S. crassatina with 

 rather large zoœcia. 



Habitat. — Exp. Antarct. Belge. 



N os 277 and 288, Dredge (Chalut) I. Lat. 7i°og / S.- Long. Sg° i5' W.; 460 met.; -fo.3 C. 



N° 332, Tangles IV. Lat. 71° 18' S.- Long. 88*02' W. ; 435 met. ; +o.3 C. 



N os 61g, 683, Tangles VIII. Lat. 70 oo' S.- Long. 80048' W. ; 5oo ? met. ; -f-o.g C. 



N° 741, Tangles IX. Lat. 70 20' S.- Long. 83° 23' W. ; 469 met. ; +0.8 C. 



Smittia pileata sp. nov. 



(PI. IV, figs. ya, b) 



Zoarium incrusting. Zoœcia oval to oblong, slightly raised, with fairly large pores 

 over the surface, below the aperture an umbo, which usually projects over the aperture, 

 but is sometimes free and well below the aperture. The sides of the peristome are often 

 raised, and within it there is a médium sized lyrula, while above usually as a part of the 

 next zoœcium there is an élévation forming a cap. The distal margin of the zoœcium runs 

 in to the aperture as in Lepralia cruenta Norman. Ovicell short, raised, perforated by a 

 few pores. 



This of course, in some zoœcia, would be pronounced typical Mucronella, but we 

 constantly see the artificialness of that genus. 



Habitat. — Exp. Antarct. Belge. 



N° 61g, Tangles VIII. Lat. 70 00' S.- Long. 8o° 48' W.; 5oo ? met.; 4-0. g C. 



(1) North Italian Bryozoa. (Quart. Journ. Geol. Soc, vol. XLVII, p. 19, pi. II, fig. i5. 



(2) Quart. Journ. Geol. Soc, vol. XXXVII, p. 337, pi. XVIII, fig. 94. 



