7 , EXPEDITION ANTARCTIQUE BELGE 



Smittia reptans sp. nov. 



PI. IV, fig. ii 



Zoœcia creeping, younger zoœcia growing from each upper corner ; much raised towards 

 the oral aperture, which is situated a short distance below the distal end. The peristome 

 has a proximal groove and is much raised, in a few cases forming a raised tube. The surface 

 is porcellanous, and in some zoœcia minute pores round the edge can be distinguished, also 

 a few minute pores spread over the surface. Ovicells unknown. 



The narrow lyrula can seldom be distinguished having only been seen in two or three 

 zoœcia, and if it had not been seen, the species might hâve been mistaken for Schizoporella. 

 The growth and shape is very similar to that of Hippothoa, though not as much so as the 

 drawings would suggest, since the zoœcia are about four times the size of H '. divaricata and 

 instead of being hyaline the walls are thicker and porcellanous. It grows similarly to 

 Lagenipora Edwardsii Jullien ( : ), and to Mucronella cothurnica Kirkpatrick from Alauritius ( 2 ), 

 and we hâve uniserial growth in Schizoporella Alderi B., various Beania, Membranipora, Hippothoa 

 &c. &c. 



Habitat. — Exp. Antarct. Bel^e. 



N° 288, Dredge I. Lat. 7i°oc/ S.- Long. 89° i5' W. ; 460 met. ; -fo.3 C. 



N° 428, Tangles VI. Lat. 71" 19' S.- Long. 87 3f W. ; 436 met. ; — 0.2 C. 



N° 5yo, Tangles VIL Lat. 70 23' S.- Long. 82" 47' W. ; 480 met. ; +0.8 C. 



N os 619, 683, 991, Tangles VIII. Lat. 70°oo' S.- Long. 80048' W.; 5oo?met.; +0.9 C. 



Escharoides biforrnata sp. nov. 



PI. VII, fig. 5 



Zoarium incrusting. Zoœcia ovate, convex, surface finely granular, having pores scat- 

 tered over the surface, with the pores more numerous round the border. The secondary 

 orifice, in the ordinarv zoœcia is rounded on the distal, narrower at the proximal end, and 

 near the proximal end — sometimes within the secondary orifice — there is an avicularium 

 with a triangular mandible ; also frequently there is an avicularium at the side of the secondary 

 aperture. The région of the aperture ofthe ovicelligerous zoœcia projects forward, and the 

 aperture is very much wider than that ol the ordinary zoœcia. The ovicell is short and 

 thrown back. 



The only spécimen is on a stone, and the condition does not permit of an exami- 

 nation of the primary orifice, but the characters which are available indicate an affinity with 

 Escharoides Sarsii Sm. ofthe Arctic, and it is therefore put under the genus, without an opinion 

 being expressed, that the genus will be permanentlv retained. I do not find where Milne 

 Edwards has given the generic name though he his credited with it. 



Habitat. — Exp. Antarct. Belge. 



N° 683, Tangles VIII. Lat. 70 00' S.- Long. 8o° 45' W. ; 5oo ? met. ; —0.9 C. 



(1) Bull. Soc. Zool. de France, vol. VII, 1882, p. (14) 5l2, pi. XIV", figs. 3o, 3i. 



(2) Ann. and Mag. Nat. Hist, s. 6, vol. I, p. Si, pi. IX, fig. 5. 



