BEYOZOA FROM ?,EAH CA.i'E HORN, 249 



Idmonea Milneana, d'Orhigny. 



Idmonea MUneana, d'Orb, Voyage dans I'Amer. Merid. p. 20, pi. 0. 

 figs. 17-21, 



For synonyms see Miss Jelly's Catalogue, and add MacGill. Tert. 

 Polyzoa of Victoria, p. 124, pi. 17. figs. 1, 2 (1895). 



The specimens from Cape Horn have very long radical pro- 

 cesses, given oft" from various parts of the dorsal surface ; and 

 the habit is so similar to that of I. interjuncta, MacGill., that at 

 first it was taken for that species, but measurements of the 

 zooecial tubes (about 0"2 mm.) showed it to be I. MUneana. In 

 d'Orbigny's specimen 1374.3, from the Falkland Islands, there is 

 an ovicell near to a bifurcation, which does not extend over 

 many zooecia. 



Hah. Falkland Islands, from considerable depths (d'Orb.); 

 Tierra del Fuego and Patagonia, 30 fath. ; Chonos Archipelau;o 

 (Darwin) ; Azores, 450 fath. (Bush) ; Queensland (Hasiv.) ; 

 New South Wales; ISTevv Zealand (Waters); Kerguelen, 75- 

 150 fath. (Bush); Queen Charlotte Islands (Hinchs); Fiji; 

 Mediterranean, as 1. notomale, Busk. Cape Horn Expedition. 

 [Smyth Channel, Long Island, 8 fath. ; Punta Arenas (Calvet).'} 



Fossil. Tertiaries of New Zealand ; do. of Mt. Gambler, Curdies 

 Creek, Bairnsdale (Australia). European Tertiaries, Bartonian 

 to Pliocene. 



Idmonea atlantica, Forbes. 



The zooecial tubes are about 0'14 mm. internal diameter, and 

 the series are 0'5-0*6 mm. apart. 



This I have referred to in my memoir on the Antarctic 

 Bryozoa, p. 91, and have given the distribution as Arctic, British, 

 Mediterranean, N. Atlantic, Kergueleo, Cape of Good Hope, 

 Tristan da Cunha, Antarctic, and Cape Horn, station unknown. 



There is one small piece of Idmonea with rather larger zooecia 

 and the series further apart. 



HoRNEEA ANTARCTICA, Waters. 



Hornera antarctica, Waters, Exped. Antarct. Beige, Bryozoa, p. 9^5, 

 pi. 9. figs. 1 a-l. 



There are a few small pieces of this Hornera, which is closely 

 allied to H. lichenoides. It was found in the Antarctic at depths 

 varying from 480-569 metres. 



