1867.] MR. G. F. ANGAS ON AUSTRALIAN MOLLXJSCA. 207 



This pretty species of Trivia may readily be distinguished by the 

 liver-coloured blotches on the back of the shell. It is found amongst 

 the rocks and under stones at low spring tides. Length G lines. 



Fani. AMPHIPERASIDiE. 



128. Amphiperas hordacea. 



Ovulum Jiordaceum, Lam. Auim. sans Vert. x. p. 471 ; Reeve, 

 Conch. Icon. pi. 8. f. 37. 



A beautiful little elongated species, of a bright orange-colour, 

 transversely striated, with the outer lip dentately serrated. A single 

 specimen only was found, attached to the same branch of Goryonia 

 from which the following species was procured. On comparing it 

 with examples of A. hordacea from Borneo it appears more shouldered 

 and compact, with the sculpture stronger and the aperture narrower 

 and more compressed. Until an op])ortunity offers of examining 

 more specimens, I should hesitate to separate it from A. hordacea. 

 Length 3^ lines. Bornean specimens 5^ lines. 



129. *VoLVA ANGASI. 



Ovidum angasi, A. Adams, MS. in Mus. Cuming ; Reeve, Conch. 

 Icon. pi. 10. f. 43 a, h. 



Of this fine species, which somewhat resembles Ovulum subre- 



flexuni. Sow., I obtained two live specimens on a branch of red Gor- 



gonia amongst the rocks at Watson's Bay, during an unprecedentedly 



low spring tide. No other specimens have been found. Length 



1 inch 3 lines. 



Fam. Strombid^. 



130. Strombus (Canarium) luhuanus. 



Strombus luhuanus, Linn. Syst. Nat. (12th edit.) p. 1209 ; Reeve, 

 Conch. Icon. Strombus, pi. 9. f. 19. 



This species occurs at the "Bottle and Glass" rocks, Vaucluse 

 Bay, on the southern side of Port Jackson, to which spot it appears 

 to be exclusiA-ely confined. Following the coast northwards it again 

 makes its appearance in great numbers at Moreton Bay, and is widely 

 extended thence over the whole of the Indo-Pacific moUuscan pro- 

 vince. The Port Jackson specimens are smaller and lighter in colour 

 than those from the tropics. Length 2 inches G lines. 



131. Strombus (Canarium) floridus. 



Strombus Jloridus, Lam. Anim. sans Vert. ix. p. 70/. 



S. mutahilis, Swainson. 



This little Strombus, so variable in form and markings, is found 

 in company with »?. luhuanus, at the same locality in Port Jackson. 

 It is not at all common there, and displays the same paleness of 

 colour. It is one of the most abundant species of the tropics, and 

 ranges from East Africa to Tahiti. Length 1 inch 2 lines. 



