38 EXPÉDITION ANTARCTIQUE BELGE 



branch, being attached to the proximal end of the zoœcia in the newer branch. The leading 

 characteristic of C. malvinensis is the situation of the large oral aperture close to the distal 

 end of the zoœcium. 



The Magellan spécimen has 14 tentacles and the calcareous vvall is more solid than 

 is usual in Cellaria. The spécimen Cellaria ornata 13607 from Patagonia in d'Orbigny's 

 collection is but small, consisting of about four articulations. The chitinous tubes, of course 

 are attached to the two nodes and are not free, as figured by d'Orbigny, pi. II, fig. 11. 

 There are several triangular avicularia, which d'Orbigny does not seem to hâve noticed, 

 when lie described and figured this spécimen. In the Cape Horn material there is 

 C. malvinensis of the same size as d'Orbigny's spécimen as well as Cellaria clavata Bush, 

 and C. variabilis Bush. 



MacGillivray (') has named a fossil from Curdies Creek, Victoria, C. contingua, which 

 had been referred to by me as C. malvinensis, and I think MacGillivray is right, as the 

 avicularium is not symmetrical, and differs from that of the South American form, but with 

 regard to the zoœcia being disposed alternately in longitudinal séries, it should be remembered 

 that the position is not always constant ; for example in C. variabilis B. (from Port Elizabeth, 

 South Africa), a species closely allied to C. malvinensis there are in some parts of a colony 

 zoœcia alternate in longitudinal séries, while in other parts they are opposite laterally, and 

 the same is the case in the small spécimen of C. malvinensis now described. 



Habitat. — Falkland Island (Busk) ; Kerguelen 28 fathoms (45 mètres) ; Marion Island 

 5o-75 fathoms (80-120 mètres) ; Patagonia 45 fathoms (j3 mètres) ; Fiji 1450 fathoms (2450 

 mètres) (Chall.) ; Baie Orange (Jull.). 



Fossil : Australia and New Zealand. 



Exp. Antarct. Belge. 



N° 1068. On the carapace of Eurypodius Latreilli. Straits of Magellan. 



Cellaria lata sp. nov. 



(pi. 11, %. 11 



There is onty one small unbranched spécimen. The zoœcia are very wide with interior 

 ridges, which however are not raised as in C. dubia Busk, except near the oral aperture ; 

 and above the aperture there is a projection on each side. The oral aperture is wide, crenu- 

 lated on the distal edge, and has two denticles on the proximal border. 



The ovicell is but ver}^ slightly raised, however, in the semitransparent spirit spécimen 

 it can be distinctly seen, with its semicircular or round aperture just on the zoœcial border. 



Habitat. — Exp. Antarct. Belge. 



N° 1012, Tangles VII. Lat. 70° 23' S.- Long. 82 47' W. ; 480 met. ; +0.8 C. 



(1) Tert. Polyzoa of Victoria, p. 28, pi. III, fig. 18. 



