718 STUDIES ON AUSTRALIAN MOLLUSCA, Xlii., 



Only one species of bliis genus is known l^callv. Mr. Brazier, 

 who collected the type-specimens, agrees with me that D. 

 jacksoniensis probably represents the young of the unfigured D. 

 brazier i. The specimen drawn, I gathered at Long Reef. I 

 have also seen the species at Maroubra. 



EXPLANATION OF PLATES XLVI.-LIL 

 Plate xlvi. 

 Fig. 1. — Solecardia cryptozoica Hedley; animal expanded. 

 Fig. 2. — Marcia nitida Quoy & Gaimard. 

 Fig. 3. — Orifice of inhalant .siphon of same. 

 Fig. 4. — Ainphidesma anyaxta Reeve. 

 Fig. .5. — Ododomia pascoei Angas. 

 Fig. 6. — Hemitoma aspera Gould. 



Plate xlvii. 



Fig,7. — Scutus antipodes Montfort, crawling. 



Fig. 8. — The same at rest. 



Fig. 9. — Young stage of same. 



Fig. 10. — Lucapinella nigrita Sowerhy. 



Fig. 11. — Gena strigosa A. Adams. 



Fig. 12. — Monodonta o}>tiisa Dillwyn. 



Plate xlviii. 

 Fig. 13. — Xerita meJanotragns Smith. 

 Fig. 14. — Operculum of same. 

 Fig. 15. — Mitra rhodia Reeve. 

 Fig. 16. — Radula of same. 

 Fjtr. 17. — Phenacolepas cinnamomea Gould. 

 pji,_18. — Intromittent organ of same individual. 



Fig. 19. — Head of female P. cinnamomea, the lip expanded above the 

 pedal mucous gland. 



Plate xlix. 



Pig. 20. — Arcularia partkeps Hedley. 



Fig. 21. — Xymeiie hanleyi Angas. 



Fig. 22. — Operculum of young A'. Iinnkyi, the muscle-scars visible through 



its substance. 

 Fig. 23. — Cluster of ova of A', hanhyi. 

 Fig. 24. — A single egg-capsule further enlarged. 

 Fig. 25. — Dolahrifera hrazieri Sowerby, also detail sketch of tubercle and 



exserted filament. 



