Essays on the Microscope / Containing a Practical Description of the Most Improved Microscopes, a General History of Insects, etc., etc.

by George Adams

Bulla Regulbiensis.

Fig. 28. B. crassa apertura medio coarctata. The thick dipper, with a compressed aperture.

The colour white and opake. From Reculver: very rare.

NAUTILUS.
THE CHAMBERED NAUTILUS.

Nautilus Beccarii.

Fig. 29. N. spiralis umbilicatus geniculis insculptis. The spiral umbilicated nautilus with deep joints.

The colour, while the fish is alive, is a fine pellucid crimson; when dead, is white. It is found alive on the fucus vesiculosus, and is a very common shell on all the coast, and seems to be an universal litoral one, by the numbers found at Rimini, and in the sand of the South Seas.

Lin. S. N. p. 1162, No. 276. Nautilus Beccarii. Planch. Tab. 1. Fig. 1. Gualtier, Tab. 19. Fig. H, H, I.

Nautilus Crispus.

Fig. 30. N. spiralis geniculis crenatis. The spiral nautilus with crenated joints.