234 MK. A. W. WATEHS ON 



Salicornaria clavata, Busk, Zool. Ciiall. Exp. vol. x. pt. xxx. p. 88, 

 pi. 12. %. 8. 



Hab. Victoria; New South Wales ; Bass's Straits; Kergueleu 

 Island. Cape Horn Expedition, Station unknown. 

 Fossil. Victoria. 



Cellaria variabilis (JBics/c). 



Salicornaria variabilis, Busk, Zool. Chall. Rep. vol. x. pt. xxx. p. 89, 

 pi. 12. iigs. 3 & 9, fig. 7 in text. 



The ovicellular opening is at first round, and subsequently the 

 proximal end becomes straight. 



Ilab. Oft" Patagonia and Kerguelen Island (Busk). Cape 

 Horn Exp., Station unknown. 



MiCEOPOEA LEEVissiMA, Waters. 



Micropora brevissima, Waters, Expdd. Antarct. Beige, Bryozoa, p. 40, 

 pi. 2. figs. 7 a-c, 



Thalamopoeella labiata (Busk). (PL 29. figs. 6-9.) 



Vhicularia labiata^ Busk, Zool. Chall. Exp. vol. x. pt. xxx. fig. 73, and 

 woodcut fig. 3. 



Thalamoporella lahiata. Waters, Zool. Chall. Exp. vol. xxxi. pt. Ixxix. 

 p. 13, pi. 1. fig. 23, pl. 2. figs. 12-15, 33. 



Vincularia elegans, d'Orb., Voyage dans I'Am^rique M^ridionale, p. 21, 

 pl. 9. figs. 25-28. 



Vincularia ornata, Busk, Brit. Mar. Polyzoa, p. 96, pl. 65. fig. 2. 



Before discussing the Cape Horn specimens it should be 

 mentioned tliat d'Orbigny's specimen of Vincularia elegans in 

 the Museum d'Hist. Nat. Paris, is, on the whole, as figured by 

 d'Orbiguy, but iti some zocecia a growth from each side forms a 

 calcareous bridge over the opesium (see Pl. 29. fig. 9). The 

 bridge is underneath the membrane to which the operculum is 

 attached. 



It seems to be by no means rare in the neighbourhood of Cape 

 Horn, and while the bridge, just referred to, was not seen in 

 any of the specimens collected by this Expedition, they other- 

 wise entirely correspond with d'Orbigny's specimen, iu which, 

 however, the bridge is only found to a few zocecia. The opesial 

 opening is slightly longer and wider than that of the ' Challenger* 

 T. labiata, Busk, and in the Cape Horn specimens there are a few 

 minute denticles or hooks growing on the border of the opesium; 



