petres cent (petre sent)

[L. petra, Springs of petres cent water. Boyle , Works, III. 554. Petricola (pē-trik'ō-lä), n. [NL.: see petrico lous .] The typical genus of Petricolidæ . La Petricolidæ (pet-ri-kol'i-dē), n . pl . [NL., Pe tricola + -idæ .] A family of bivalve mollusks marck. which live in rocks, named by D'Orbigny in 1837 from the genus Petricola; the rock-borers. They a, Petricola ( Pet rico lari a ) pho lad i form is (right valve). b, Petri cola lithophaga (right valve). are related to the Veneridæ, but the mantle is enlarged, the pedal opening small, the foot small, and the shell more or le gaping. The species for the most part perforate clay or soft rock.