1871.] mr. g. f. angas on australian mollusca. 95 



62. Amphiperas brevis. 



Ovulum breve, Sow. Spec. Conch, f. 26, 27. 

 Port Stephen, New South Wales. 



Farn. CERiTHiiDiE. 



63. Cerithium rhodostoma, A. Ad. ; Sow. in Thesaurus, vol. 

 ii. pi. 180. f. 103. 



A very pretty species, beautifully sculptured, of a pearly brown 

 colour, the columella rose-coloured. 



Lake Macquarie, and " Sow and Pigs," Port Jackson. Mr. 

 Adams's type is from Tasmania. 



Fam. Littorinid^e. 



64. Littorina scabra. 



Helix scabra, Linn. Syst. Nat. p. 1242 ; Reeve, Conch. Icon. pi. 5. 

 f. 21. 



A very abundant species, widely distributed throughout the Indo- 

 Pacific tropical regions. Found by Mr. Brazier attached to the 

 trunks of mangroves in Port Jackson. 



65. Fossarina brazieri, Angas, P. Z. S. 1871, PI. I. f. 24. 



A smaller species than F. patula, A. Ad. & Ang., rounder in 

 form, of a different sculpture, and more or less variegated with dark 

 brown. 



Fam. Eissoid-e. 



66. Rissoina crassa, Angas, P. Z. S. 1871, PL I. f. 16. 



A solid species, strongly longitudinally ribbed, the ribs termina- 

 ting in nodules at the base of the last whorl. 



" Bottle and Glass " rocks, Port Jackson (Brazier). 



Fam. NERITID.3E. 



67. Nerita albicella, Linnseus ; Quoy, Voy. de l'Astrolabe, 

 iii. pi. 65. f. 17,18. 



Common throughout tropical Australia and the Indo-Pacific pro- 

 vince generally. 



Rose Bay, Port Jackson (Brazier). 



68. Neritina (VittA) rangiana, Recluz, Rev. Zool. 1841. 

 N. viridis, var. major, Rang. 



Differs from N. viridis, Linn., in the angularity of the last whorl, 

 and in being of a different shade of green, painted with several rows 

 of interrupted dark lines. 



Dredged in Port-Jackson Harbour. 



