464 CENSUS OF THE MARINK MOLLUSCA OF TASMANIA, 



ventral margin, crossed by close thread-like strife or growth-lines, 

 margin scarcely crenulated. Hinge-line curved; in the right 

 valve are a long subcostal cardinal tooth and two anterior sloping 

 teeth; on the posterior side are three strong oblique lateral teeth. 

 Left valve with two diverging flattened cardinal teeth, and 

 laterals corresponding to those in the right valve. Cartilage 

 internal, in a pit beneath the beaks. Muscular scars very faint; 

 pallial line simple. Umbo, ventral diam. 1-5, antero-posterior 

 diam. TT mm. 



Type to be presented to the Hobart Museum; a considerable 

 number of specimens collected. 



EXPLANATION OF PLATES. 

 Plate xxiii. 



Fig. I.— Crossed cancellata, Ten. -Woods; from a specimen in Petterd's 



Collection, 

 Fig, 2.—Lampusia nodocostata, Tate & May; from the type. 

 I'ig. S.—Murex laminata, Petterd; from the type. 

 Fig. 4. Odontostomia Tasmanica, Ten. -Woods; from a specimen in the 



Hobart Museum. 

 Fig, 5,—Rissoa 2ierexigua, Tate & May; from the type. 

 Fig, 6, — Erato himacnlata, Tate. 

 Fig. 7. — Alexia meridionalis, Brazier. 

 Fig. 8. - Rissoa peUucida, Tate & May; from the type. 

 Fig. 9, — Fossarina fimiciilata, Ten. -Woods. 

 Figs. 10-11. — Triforis fasciaUis, Ten. -Woods. 

 Fig. 12. — Clanculus philomena, Ten. -Woods; from the type. 

 Fig. 13. — Apollo epitrema, Ten. -Woods; from the type. 

 Fig. 14. - Thi/lacodes caperatus, Tate & May; from the type. 

 Figs. \o-Yl .—Turritella Atkinsoni, Tate & May. 



Plate xxiv. 



Fig. 18.— Rissoa demessa, Tate & May; from the type. 



Fig. 19. — Columhella saccharata, Reeve. 



Fig. W.—Cantharus kingicola, Tate & May; from the type. 



Figs. 21-22. — Gibbula Legrandi, Petterd. 



Fig. 23. — Schismope Taswiamca, Petterd; from the type. 



Fig. 24. Beddomei, Petterd; from the type. 



Fig. 25-26.— Zidora Legrandi, Tate; from Tate's specimen. 



