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An Illustrated and Cross-Referenced Glossary of Malacological and Conchological Terms |
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| by Paul S. Mikkelsen | |||
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| Term | Definition |
| CARDINAL PIT | [need definition] | |
| CAUDAL PIT | A conspicuous depression in the posterior dorsum of the foot of some snails which contains mucous glands. | |
| LIGAMENT PIT | Relatively broad depression in cardinal area for attachment of ligament in bivalves; see also: CHONDROPHORE; COCHLEATE. | |
| PEDAL PIT | In APLACOPHORANS, an anterior depression which marks the begining of a PEDAL GROOVE. | |
| PIT | A small cavity or hole; a pinpoint depression; see also: PUNCTATE; PUNCTUM; QUINCUNX. | |
| RESILIAL PIT | One of a series of small pits in line below the RESILIUM. These occur in three genera: Mytilus, Mytella and Perna. | |
| UMBILICAL PIT | An opening or depression in the UMBILICUS. | |
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