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

by George Adams

Fig. 44. C. subcordatum antice muricatum. The heart cockle, with the front muricated.

The colour opake white. From Shepey island: not uncommon.

LEPAS.
THE ACORN-SHELL.

Lepas Strigatulus.

Fig. 45. L. balanus striatus apertura obliqua. The striated acorn-shell, with an oblique aperture.

The colour light brown. From Sandwich, on the roots of sea-weeds, the finest specimens on lobsters: not uncommon.

ECHINUS.
THE SEA-URCHIN.

Echinus Lobatulus.

Fig. 46. E. subrotundus planus lobatus. The flat roundish lobated echinus.

The colour opake white. From Reculver: rare.