of new south wales. 119 



5. — Helix (Thalassia) annulus. 



Helix (Thalassia') annulus, Brazier. Proc. Linn. Soc, N.S.W., 

 page 100. 



Hab. Katow River, New Guinea ; also Dungeness Island, 

 Ton-es Straits. 



6. — Helix (Thalassia) Sappho. 



Helix {Thalassia) Sappho, Brazier. Proc. Linn. Soc. N.S.W., 

 page 100. 



Hab. Yule Island, New Guinea. 



7. — Helix (Thalassia) sp. 1 

 Hah. Cape York and Albany Island, North Australia. 



8. — Helix (Thalassia) sp. 1 



Hab. Mount Earnest Island, Torres Straits. 



This species comes near Helix Kreffti, Cox. The specimens ob- 

 tained were collected by Mr. Beddome at the above locality and 

 given to me when at Cape York to be placed in the collection. 



9. — Helix (Thalassia) sp. 1 

 Hab. Barnard Islands, No. 3, North-east Coast of Australia. 



This species is allied to Helix rustica Pfr., but much flatter with 

 a broad margin at the suture. 



10. — Helix (Thalassia) sp. 1 



Six specimens of this species was found, but all dead and desti- 

 tute of colour. 



11. — Helix (Discus) Lomonti. 



Helix (Discus) Lomonti Brazier. Proc. Linn. Soc, N.S.W. 

 page 101. 



Hab. Yule Island, New Guinea. 



12. — Helix (Conulus) turriculata. 

 Helix turriculata, Cox. Proc. Zool. Soc, 1867, p. 724. 



