62 A NEW SPECIES OF PEDICHT-LINA. 



The calyx of the latter differs from that of the former 

 in being well supplied with spines, apparently irregularly 

 distributed, generally abundant but sometimes less 

 numerous. There is usually a fairly well-defined ring of 

 them at about the level of the bases of the tentacles. 

 In young calyces spines may be absent. Though P. cernua 

 generally has a smooth calyx, yet a very spiny condition 

 is known*, while Hincksf has figured some with a few 

 scattered spines. The calyx of P. whiteleggii is narrower 

 than that of P. cernua. 



The text figure represents a camera lucida drawing 

 of an advilt embryo-bearing calyx — a mounted specimen. 

 It is rather larger than the rest in our possession. The 

 anatomy does not call for special comment, the position 

 of the organs being indicated in the figure. The ganglion 

 is only shghtly bilobed. The two ovaries are relatively 

 large and the common oviduct is a wide tube with thick 

 walls. 



The endoproct Polyzoa recorded from Australia are 

 as follows : — 



(1) Pedicellina cernua Whitelegge, 1889=F. white- 

 leggii Johnston and Walker, 1917, Sydney Harbour. 



(2) Pedicellinopsis fruticosa Hincks (1884) — Port 

 Philhp Heads, Victoria. In 1886, Busk reported on 

 specimens collected by the Challenger in 150 fathoms, 

 off Twofold Bay, N.S.W., and defined a genus Ascojjodaria 

 (p. 42, pi. 9-10), including Hincks' genus and species under 

 it. It is under Busk's name of Asc fruticosa that the 

 animal has since been hsted by Whitelegge (1889, p. 293) 

 who recorded finding it among seaweed on ocean beaches 

 in the vicinity of Sydney. Hedley (1915, p. 72) also 

 mentioned its occurrence there. Some writers regard 

 Busk's genus as a valid one, distinct from, though closely- 

 related to, that erected by Hincks. 



(3) ? Loxosoma sp., recorded by Whitelegge (p. 293) 

 as occurring on a Sipunculid, Phascolosoma australis 

 Keferst, in Port Jackson. 



♦Johnston, Brit. Hydr. Zoophytes, vol. 2, 1847, \A. 70, fig. 5. 

 ■j-Brit. I'olyzoa, p. .560. and \i\. 81, fig. 2. 



