Narrative of the surveying voyages of His Majesty's ships Adventure and Beagle, between the years 1826 and 1836. Volume I. Proceedings of the First Expedition, 1826-1830

by Robert Fitzroy; Philip Parker King

Habitat ad Valparaiso. Mus. Brit., nost., Brod.

This is certainly a variety of No. 27, Bulinus Gravesii.

29. Bulinus dentatus.

B. testâ cylindraceâ, punctatâ, sub-diaphanâ, fusco maculatâ; aperturâ dentatâ, clausiliam mentiente; long. 15⁄16; lat. 5⁄16; poll.

Habitat ad oras Brasiliæ (St. Catherine). Mus. Brit., nost.

30. Bulinus lutescens.—No. 140. MSS.

B. testâ obovatâ, ventricosâ, subscabrâ, lutescente; long. 1⅛; lat. 11⁄16; poll.

Habitat ad Maldonado (Gorriti). Mus. Brit., nost., Brod.

31. Bulinus corrugatus.—No. 941 MSS.

B. testâ subalbidâ, transversim et longitudinaliter rugoso-striatâ, maculis fuscis, obsoletis; aperturâ purpurascente; columellâ nigricante purpureâ; long. 16⁄8 paulo plus; lat. 13⁄16; poll.