238 ME. A. W. WATEKS ON 



flat, club-shaped, often dentate at the ends, other spines are very 

 long and thin. The oral aperture has a very distinct sinus which 

 expands at the lower border, the distal end of the aperture is 

 round. The operculum is thicker at each side and is thinner 

 down the centre, the opercular muscles are attached at some 

 distance from the border. 



Bab. Cape Horn Expedition, Station unknown. Growing 

 on Aspidostoma giganteum, Busk. 



HiPPOTHOA DivARiCATA, Lamouroux. 



For the distribution of this cosmopolitan species see my 

 " Bryozoa" in Exped. Antarctique Beige, p. 53, pi. rii. fig. 3. 



HiPPOTHOA DISTANS, MttcGiU. 



This is also widely distributed. See op. cit. p. 54, pi. iii. 

 figs. 8 a-g. 



Haswellia auriculata, Busk. 



Hasioellia auriculata, Busk, Zool. Chall. Exp. vol. x. pt. xxx. p. 17.3, 

 pi. 24. fig. 10 ; Waters, op. cit. vol. xxxi. pt. Ixxix. p. 31, pi. 3. fig. 38 ; 

 JuUien & Calvet, Bryozoaires prov. des campagnes de THirondelle, 

 p. 145, pi. ] 7. fig. 3. 



Vincularia pentagona, d'Orbigny, Voyage dans rAmerique Merid. p. 21, 

 pi. 10. figs. 4, 6. 



? Porina grandipora, Waters, Quart. Journ. Geol. See. vol. xliii. p. 59, 

 pi. 7. fig. 23. 



Although this species was first described by d'Orbigny, the 

 name given by Busk must be retained *, as the original description 

 was insufficient, and I had no idea that auriculata ^nA pentagona 

 were identical until I saw d'Orbigny's specimens. The generic 

 name Haswellia is used with reserve of any opinion as to its 

 being permanently retained. 



Hob. Tristan da Cunha, 75-150 fath. ; Cape of Good Hope, 

 150 fath. ; Falkland Islands, No. 13617, Mus. d'Hist. Nat. Paris 

 {d'Orh.) ', Azores, 130 met. {Jull. Sf Galv.). Cape Horn Exp. 

 C. H. 658, and dry pieces ; Station unknown. 



Smittta spiNosissiMA, SincJcs. 



Specimens from Cape Horn have the small zooecia with recum- 

 bent smooth ovicells, the wide plate or denticle in the oral 

 aperture, and the pores round the border sometimes seen as 



* [A decision which will not command universal assent. — Sec. L.S.] 



