188 Mr. A. W. Waters on Axistralian Bryozoa. 



position the operculum often has little wings. Opsrculum 

 O'll millim. wide. There is one large vicarious aviculariura 

 with a spatulate mandible resembling that of G. philomela^ 

 Busk (Chall. Rep. pi. xxii. fig. 7). 



The shape of the aperture is quite unusual in the genus 

 Cribrilina^ but all the other characters are Cribrilinidan, and 

 some fossils as figured by Reuss seem to have a similar aper- 

 ture. This is perhaps related to C. speciosa^ Hincks, and 

 according to Jullien (Bull. Soc. Zool. de France, vol. xi. 

 p. 606) would be Decurtaria. 



Log. Sow-and-Pigs Reef, Port Jackson, 3-4 fath. 

 {Brazier) . 



39. Microporella violacea, Johnst. 



One of two specimens from Bondi Bay is violet, the other 

 white, but this may be bleached. So far as I am aware it 

 has not been described as living near Australia, except by 

 Dr. Pergens, who writes that it was brought by a ship's cap- 

 tain from Australia. 



Log. Living : Europe ; Florida ; Madeira ; Red Sea ; 

 Bondi Bay (N. S. Wales). Fossil : Miocene of Sollingen ; 

 Pliocene of England, Belgium, Italy^ and Rhodes ; Australia. 



40. Microporella Giliata, Pallas. 



A specimen from the Sow-and-Pigs Reef has the pore 

 semilunate and an avicularium placed rather high on each 

 side. In having an avicularium on each side, and also in its 

 general form, it resembles M. Giliata, var. Golifornica^ but 

 that form has a round pore filled in with a cribriform plate. 



Log. Sow-and-Pigs Reef, Port Jackson, 3-4 fath. 



41. MicTOjporeUa deGorata^ var. lata^ MacG. 

 (PI. VI. figs. 1, 6.) 



Lepralia lunata, MacG. Zool. Vict. dec. iv. p. 27, pi. xxxvi. fig. 8. 

 Mio'oporella cUadema, var. lata, MacG. Trans. Roy. Soc. Vict, vol. xxi. 

 p. 112, pi. iv. fig. 5. 



The avicularian mandibles are without any luclda, but there 

 is a characteristic cross bar near the base. 



Log. Queenscliff, Victoria [MaGG.) ; Port PhiHip ( PF.) ; 

 Ball's Head, 12 fath., and Watson's Bay, Port Jackson. 



42. Microporella Malusii, Aud. 



Log. Living : Europe ; Australia ; New Zealand ; and South 

 America; Bottle-and-Glass Rock, 8 fath.; Sow-and-Pigs 

 Reef, 3-4 fath. ; Green Point, Port Jackson, 8 fath., sandy 



