192 MR. G. F. ANGAS ON AUSTRALIAN MQLLUSCA. [Feb. N, 



rows of large black tubercles on a greyish ground. Length 1 inch 

 2 lines. 



35. Adamsia typica. 



Adamsia typica, Dnuker, P. Z. S. 1856, p. 35/. ' 



Amongst rocks at low water in Port Jackson. Length 1 inch 

 4 lines. 



This genus must be removed from the NassincB, where it has 

 been placed as a subgenus of Cominella, it having a purpuroid oper- 

 culum. One other species is known {A. adelaidce) from South Au- 

 stralia. 



Subfam. RapaninjE. 



36. Rapana (Latiaxis) nodosa. 

 Latiaxis nodosa, A. Ad. P. Z. S. 1853, p. 98. 



An elegant species, squamately sculptured, and nearly white. The 

 aperture sometimes buif, sometimes purple. Watson's Bay and 

 Nelson's Bay. Length 10 lines. 



Fam. Dactylid^. 



37. *Olivella pardalis. 



Olivella pardalis, Ad. & Ang. P. Z. S. 1863, p. 442, pi. 37. f. 3. 



This elegant species was dredged at Watson's Bay, Port Jackson, 

 in 5 fathoms. It may readily be distinguished by three rows of 

 large brown spots encircling the whorls. Length 5 lines. 



38. *Ol,tvella leucozona. 



Olivella leucozona, Ad. & Ang. P. Z. S. 1863, p. 422, pi. 37. f. 23. 



Dredged in Port Jackson, in 6 fathoms. 



This species must not be confounded with O. leucozonias. Gray, 

 from Senegal : the latter is encircled with two narrow white zones ; 

 whilst the former has only one, and is moreover of a different style 

 of painting. Length 7 lines. 



39. *Olivella nympha. 



Olivella nympha. Ad. & Ang. P. Z. S. 1863, p. 422. 



A delicate semiopaque white slender species, with the aperture 

 effuse anteriorly. Dredged at Port Stephen and in Port Jackson, 

 in 5 fathoms. Length 7 lines. 



40. Amalda marginata. 



Ancillaria marginata. Lam.; Sow, Species Conch, pt. 1. f. 40-43; 

 Reeve, Conch. Icon. pi. 3. f. 8 a, 6. 



Several specimens of this fine shell were dredged in Port Jackson, 

 near the Heads, and on the "Sow and Pigs" bank. In Tasmania 

 it occurs of a larger size. 'I'he Port Jackson examples do not exceed 

 1 inch 3 lines in length, whilst those from Tasmania are 1 inch lU lines. 



