264 Mr. A. W. Waters on A ustralian Bryozoa. 



Log. Cape of Good Hope ; New Zealand {B.) ; Port 

 Stephens, New South Wales (sent by Brazier). 



Ctenostomata. 



92. AmatMa semispiralisl (Kirch enpauer). 



Serialaria semispiralis, Kirch. Cat. Mus. GodeiFroy, iv. p. xxxiv. 

 Amathia semispiralis, Busk, Chall. Rep. p. 36, pi, viii. fig. 3. 



There is a small dried fragment of Amathia from Darnley 

 Island, Torres Straits, in which the zooecia are arranged 

 spirally, but are broken up into groups, and in our present 

 state of knowledge we may doubt whether this should be 

 separated from A. semiconvoluta. 



There is also an Amathia found in Naples which has 

 the zooecia arranged spirally, but only has zooecia in the 

 upper half of the internode. This Kirchenpauer called in 

 manuscript A. distans — a name since given by Busk to 

 another species. 



93. Amathia hiseriata, Krauss. (PI. VI. fig. 25.) 



Amathia hiseriata, Krauss, Coralliueen und Zoopliyten der Sudsee, 



1837, p. 23, fig. 1. 

 Serialaria Woodsii, Goldstein, Quart. Journ. Micr. Soc. Vict. vol. i. 



uo. 1, p. 20, pi. iii. fig. 5. 



This species is attached by thick bundles of radical tubes, 

 as described and figured by Krauss, but my specimens have 

 not such a mass of root as he shows. The number of zooecia 

 is not constant, about eight pairs is the most usual, but I 

 have counted thirteen pairs, and the zooecia usually occupy 

 about four fifths of an internode, though sometimes almost the 

 entire internode is filled up. 



Tenison Woods in his list of works on Amathia does not 

 mention Krauss, so that probably both he and Goldstein were 

 unacquainted with his work. 



This is allied to A. lendigera, L., but differs in having 

 shorter internodes more closely filled up. The earlier writers 

 all seem to have described and figured A. lendigeraa,s, having 

 only a single series of zooecia ; but Hincks, Busk^ &c. now 

 speak of its having a double series, and European specimens 

 in my collection have two series. 



I have A. lendigera from Cape Agulhas, South Africa. 



In A hiseriata a radicle is often thrown out from the under 

 surface of the branches (see fig. 25) . _ 



Log. Australia {K.) : Portland, Victoria {G.) ; mouth of 

 Lane Cove River, 7 fath., N. S. Wales, and Shark Island, 

 8 fath. 



