BRYOZOA 37 



In C. Dennanti the distal end of the operculum is situated deeper than is usual in 

 Cellaria and rests on a slight shelf. There are 20 tentacles, while in C. clavata from the 

 Challenger there are i5 ; Calvet gives 14-15 tentacles for Cellaria salicornioides ; i5 for 

 C. fistulosa ; C. malvinensis B. has 14 tentacles. 



Fossil : Cape Otway (Victoria). 



Habitat. — Exp. Antarct. Belge. 



N° 242, Tangles I. Lat. 70° 48' S.- Long. 91 54' W. ; 410 met. ; +0.6 C. 

 N° 282, Dredge I. Lat. 71" 09' S.- Long. 8g° i5' W. ; 460 met. ; 4-0. 3 C. 

 N os 614, 623, 683, 991, Tangles VIII. Lat. 70° 00' S.- Long. 8o° 48' W. ; 5oo?met. ; 

 +o.g C. 



Cellaria dubia (Busk) 



(Pi. 11, fig. 12) 



Salicornaria dubia. Busk, Zool. Chall. Exp., vol. X, part. XXX, p. 91. pi. XII, fig. 2, and fig. 10 in the text. 



There is only a small spécimen (from 1012) in which the ends dichotomize, but without 

 an}^ completed articulation, though the breaking at the joint is commencing. This is however 

 a young branch and the branches, as is usual in Cellaria are at first continuous, as I hâve 

 shown in « Bry. S. W. Victoria », Quart. Journ. Geol. Soc., vol. XXXVII, p. 320 ; and Ann. 

 Mag. Nal. Hist., ser. 5, vol. XX, p. 92, pi. IV, fig. 6. 



The « interior ridges » are very pronounced, and stand out a long way, to an extent 

 that I hâve seen in no other species, but there are more or less similar prominences or ridges 

 in C. bicomis var. a Busk, C. ovicellosa Stol., C. divaricata Busk, C. salicoi nioides Lamx. The 

 ridges are more raised at the growing end of the zoarium. 



The operculum is almost semicircular and no teeth are visible in the spirit spécimen, 

 which is however too small for dissection. 



Habitat. — Ofi the Argentine, 600 fathoms (970 met.) (Busk). 



Exp. Antarct. Belge. 



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



Cellaria malvinensis (Busk) 



(PI. II, figs. 103, b ; PI. VIII, fig. 5) 



Salicornaria malvinensis Busk, Brit. Mus. Cat., p. iS. pi. LXIII, figs. 1-2 ; pi. LXV (bis), fig. r. 

 Cellaria ornata d'Orbigny. Voyage dans l'Amérique méridionale, p. 9, pi. II, figs. 10-r.r. 

 For other synonyms see Miss Jelly's Catalogue. 



This corresponds in size and other characters entirely with spécimens from Baie Orange, 

 sent to me by Jullien, whereas spécimens from Xew Zealand are stouter with longer inter- 

 nodes, and the front of the zoœcium is less depressed, while the beak of the mandible is much 

 narrower, so that perhaps they should be separated as varieties. The chitinous tubes at 

 the joints occur ail round the branch, and arise from the distal end of the zoœcia in the older 



