1867.J MR. G. F. ANGAS ON AUSTRALIAN MOLLUSCA. 191 



From Coodgee Bay, in shell-sand. A white, shining, semipellucid, 

 depressed little shell, with the aperture entire in front, thus wanting 

 the notch of the typical NeritulcB. Length 2 lines. 



29. *Cyi,lene lactea. 



Cijllene lactea. Ad. & Ang. P. Z. S. 1863, p. 422. 

 A milk-white species covered with a thin epidermis, dredged in 

 deep water at Port Stephen. Length 6 lines. 



Subfam. Purpurin^. 



30. Purpura (Polytropa) succincta. 



Buccinum succinctum, Mart. Univ. Conch, ii. pi. 45. 



Purpura rugosa. Lam. 



A fine large species, of a yellowish-white colour, very prominently 

 transversely ribbed throughout. Common on rocks at low water 

 generally. Length 2\ inches. 



31. *PURPURA (StRAMONITA) NEGLECTA. 



Purpura (^Stramonita) neglecta, Angas, P. Z. S. 1867, p. 110. 



A small ribbed species, with the interstices muricately scaled ; 

 purple within. Under stones outside Port Jackson Heads. Length 

 9 lines. 



32. Purpura (Cronia) amygdala. 



Purpura amygdala, Kiener, Icon, Coq. Viv. pi. 10. f. 26. 



Buccinum amygdala, Reeve, Conch. Icon. pi. 8. sp. 60. 



The columella and aperture are of an orange cream-colour, and 

 the whorls squamately sculptured and banded with brown fillets. 

 Although frequent at Moreton Bay, this species is rare in Port Jack- 

 son, a few examples only having been found. Length 10 lines. 

 Specimens from the north measure 1| inch. 



33. Pentadactylus (Sistrum) chaideus. 



Purpura chaidea, Duclos, Ann. Scien. Nat. 1832. 



P. nassoides, Quoy et Gaim. 



A white globular species, somewhat resembling a Nassa, and in- 

 habiting New Caledonia, of which I obtained three living specimens 

 amongst the rocks at Nelson's Bay, near Port Jackson. Length 

 9 lines. 



34. Pentadactylus (Sistrum) tuberculatus. 



Purjmra tuberculata, De Blainv. Nouv. Ann. du Mus. pi. 9. f. 3. 



P. marginalba, De Blainv. 



P. granulata, Duclos. 



Ricinula tuberculata. Reeve, Conch. Icon. pi. 2. f. 11. 



A very common species in Port Jackson, and widely distributed 

 throughout the entire Indo-Pacific province. Easily known by its 



