pectines

This drum which they use is made out of a piece of hollow wood, which must be either fir, pine, or birch, and which grows in such a particular place that it follows the course of the sun; that is, the pectines, fibræ, and lineæ in the annual rings of the wood must wind from right to left.

Sidonia, the Sorceress : the Supposed Destroyer of the Whole Reigning Ducal House of Pomerania — Volume 1 Wilhelm Meinhold 1824

In the very thickest strata of our freestone, and at considerable depths, well-diggers often find large scallops or pectines, having both shells deeply striated, and ridged and furrowed alternately.

The Natural History of Selborne, Vol. 1 Gilbert White 1756