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



69. ConescliarelUna elegans (d'Orb.). 

 (Fl. V. figs. 13-17.) 



Fldbellopora elegans, d'Orb. Pal. Fr. p. 53, pi. 661. figs. 1-5. 



In some of the specimens the flabelliform zoarium is formed 

 of two contiguous layers back to back ; others have between 

 the layers a cancellous structure with numerous large open- 

 ings, between which are small round avicularia. The zooecia 

 are similar to those of C. cancellata^ also with small round 

 avicularia between them, but the zooecium is larger, and the 

 oral aperture measures 0"1 millim. instead of 08 millim., as 

 in G. cancellata. 



Log. Ouantang and Hainan (China seas), 20 met. {d^Orh.) ; 

 Port Stephens, 7-8 fath. (dredged by Brazier) . 



70. Conescharellina cancellata (Busk). 

 (PI. IV. fig. 24 ; PI. VI. figs. 13, 18.) 



Lunulites ccmcellata. Busk, Brit. Mus. Cat. p. 101, pi. cxiii. figs. 4-7 ; 



Waters, Q. J. Geol. Soc. vol. xxxvii. p. 344, vol. xxxviii. p. 275. 

 Lunulites cancellatus, Waters, ibid. vol. xxxviii. p. 512, pi. xxii. figs. 10, 



On the upper surface there are numerous small round avicu- 

 laria irregularly placed, and the under cancellated surface is 

 formed of round cells with small round avicularian openings 

 similar to those on the upper surface. All my specimens 

 have these round avicularia, and they are also very distinct 

 in the British-Museum specimen ; but Mr. Busk does not seem 

 to have correctly appreciated them, as his Lunulites is defined 

 as having vibracula, and his Conescharellina as having avicu- 

 laria. 



The peristome has a slit on the proximal edge, and the 

 operculum is oval. The avicularian mandible has the lucida 

 in the centre. 



The dorsal surface of C. incisa is very similar to that of 

 this species, but I am unable to see that the round openings 

 had any mandibular covers, whereas these are universal in 

 C cancellata. 



Although this seems to be abundant from some parts of 

 Australia, it is not mentioned by MacGillivray as occurring 

 off Victoria. 



Loc. Philippine Islands {B.) ; Eaton, New Guinea, 7 fath. ; 

 Darnley Island, Torres Straits, 10-30 fath, ; Princess-Char- 

 lotte Bay, N.E. Australia, 13 fath. ; Port Stephens, from 

 weeds on sandy mud bottom, 5-6 fath. (all dredged by 

 Brazier). Fossil: Curdles Creek, Vict. ; Mt. Gambler, S. 

 Austr. J Bairnsdale, Gippsland. 



