Mr. A. W. Waters on Australian Bryozoa. 93 



but in the ' Challenger ' Report he places it under Cellula- 

 riaclje, although in the definition of the family he says 

 " zcoecia — all facing the same way." Mr. Hincks, in his 

 Brit. Mar. Polyzoa, p. 35, seems inclined to place it under 

 the Cellulariadffi ; but his Farcimia a/ppendiculata^ which is 

 no doubt closely allied, he places under Cellariidse. The 

 characters are so decidedly Membraniporidan that I called a 

 variety M. oculata, var. spinosa (Quart. Journ. Geol. Soc. 

 vol. xxxix. p. 434, pi. xii. fig. 22), and I now reluctantly 

 remove it, but do so as it ought to be classified with F. appen- 

 dicidata, H. ; F. cerens, Pourt. ; F. luson'a, Waters. 



Loc. Torres Straits ; Bass's Straits ; Florida ; Victoria ; 

 Cape Grenville, North-east Australia, 20 fath. [W.) ; Piper 

 Islands, 9 fath. (W.) ; 'Challenger' Stations 190, 188, 208, 

 148, 151, 18-550 fath., being from Heard Island, Crozet 

 Island, the Philippine Islands, andoff Bahia ; Mergui Archi- 

 pelago {H.) ; Ceylon (H.). 



21. Flustra dissimilis (Busk). 



Carhasea dissimilis, Busk, Cat. Mar. Polyz. p. 51, pi. I. figs. 4-7; Mac- 

 GiUivray, Zool. Vict. dec. v. p. 28, pi. xlv. fig. 3. 



Loc. Tasmania {B) ; QueensclifF; King's Island ; Port 

 Phillip Heads (Victoria) ; Shoalhaven Beach (New South 

 Wales). 



22. Flustra crihriformis (Busk). 



Carhasea crihriformis, Busk, Brit. Mus. Cat. p. 51, pi. Ixviii. fig. 1 ; 

 ' Challenger ' Report, p. 58, pi. xxxiv. fig. 8 ; Haawell, " On some 

 Polyzoa from the Queensland Coast," Proc. Linn. Soc. N. S. Wales, 

 Tol. V. p. 37. 



A fine specimen from Darnley Island has no radicle-tube 

 at the lower angle of each fenestra, nor is there any indication 

 of such a structure ; and as Mr. Busk mentions this in his 

 * Challenger ' specimens, we must conclude that, according to 

 the conditions under which it grows, it is with or without 

 attachment. 



On the dorsal surface the central part of each zooecium is 

 thin and the remainder is covered with wavy lines of growth. 



Loc. Cumberland Island ; Station 186, Cape York, 8 fath. ; 

 Station 188, 28 fath. ; Station 190, 45 fath. ; Holborn Island 

 {H.) J Darnley Island, Torres Straits, 30 fath. 



23. Flustra militaris, sp. nov. (PI. IV. fig. 2.) 



Zoarium bilaminate, fronds long and rather narrow, with 

 about eight zooecia in a transverse row. Ovicell large, raised, 



