Fig. 5.

Macoma inflata, Riviere-du-Loup.

Fig. 6.

Leda pernula-(Var. tenuisculata) Riviere-du-Loup.

Fig. 7.

Leda pernula-(Var. buccata)-Riviere-du-Loup.

Fig. 8.

Leda minuta, Riviere-du-Loup.

Fig. 9.

Leda (Portlandia) glacialis, Montreal.

Fig. 10. Nucula expansa, Riviere-du-Loup.

Fig. 11. Leda (Yoldia) limatula, Riviere-du-Loup.

.

EXPLANATION OF PLATE VII.

This plate, drawn on stone under my own direction, is intended to present, as faithfully as possible, the characters of some of the more rare and critical shells of the Canadian Post-pliocene.

Fig. 1. du-Loup.

Astarte Banksi—A full-grown specimen of the ordinary type. Riviere

Fig. 2.

Fig. 3.

Astarte Laurentiana-An average full-grown specimen. Montreal.
Astarte lactea-Ordinary type. Portland, Maine.

Fig. 4.

ventral margin than usual. Portland, Maine.

Astarte Elliptica-A specimen with the ribs extending nearer to the

Fig. 5. Buccinum tenue-Full-grown specimen. Sculpture enlarged.

Fig. 6. Buccinum cyaneum-Full-grown specimen. Riviere-du-Loup. 6aSculpture enlarged.

Fig. 7. Buccinum undulatum—(Var. of undatum)—Immature shell, broken at lip. Riviere-du-Loup. 7a-Sculpture enlarged.

Fig. 8. Buccinum glaciale-Tuberculated variety. Riviere-du-Loup. Sa— Sculpture enlarged.

Fig. 9. Buccinum glaciale-Smooth variety. Riviere-du-Loup. 9a-Sculpture enlarged.

Fig. 10. Buccinum ciliatum-(Fabricius, not Gould)-Smooth variety, somewhat decorticated. Montreal. 10a-Sculpture enlarged.

Fig. 11. Buccinum ciliatum-(Fabricius, not Gould)-Small but mature speciRecent Murray Bay.

men.

Fig. 12. Buccinum Grænlandicum—Adult specimen. St. Nicholas. 12αSculpture enlarged.

Fig. 13.

Choristes elegans-(Carpenter)—Adult specimen. Montreal. 13a— Sculpture enlarged.

Fig. 14. Capulus commodus-Pt. Levi, Quebec.