716 PROTOCONCHS OF CERTAIN PORT JACKSON GASTEROPODA. 



Plate xxxvi. 



Fig. 1. — Gyrineum australasia, Perry; protoconch attached. 



Fig. 2. — Sistrum neglectnm, Angas; showing the apex. 



Fig. 3. — Tritonium fusiforme, Kiener; protoconch attached. 



Fig. 4. — ,, ,, ,, ; fii'st adult whorl. 



Fig, 5. — ,, ,, ,, ; protoconch. 



Fig. 6. — Murexangasi, Crosse; protoconch attached. 



Fig. 7. — ,, ,, ,, ; a somewhat older specimen showing the pro- 



toconch from the other side. 



Fig. 8. — Tritonium spengleri, Chemnitz; protoconch attached. 



Fig. 9. — ,, ,, ,, ; an older specimen illustrating the 



oblique position of the protoconch. 



Fig. 10. — Tritonium speciosum, Angas; protoconch attached. 



Fig. 11.— ,, ,, ,, ; sculpture of the protoconch. 



