An Illustrated and Cross-Referenced Glossary of
Malacological and Conchological Terms

by Paul S. Mikkelsen

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Term Definition

EXTRA-BRANCHIAL APPENDAGE   [need definition]. In NUDIBRANCHS See illustration: Composite Nudibranch.
   

GENITAL OPENING   See: GENITAL PORE.
   

PEN   The internal "shell" of SQUID; see also: GLADIUS; RACHIS; VANE.
   

PENIS   See: VERGE.
   

PENULTIMATE   Next to the last; see also: PENULTIMATE WHORL.
   

PENULTIMATE WHORL   The next to the last WHORL, or the one before the BODY WHORL (of snails).
   

REPENT   Descriptive of shells which, being ATTACHED by the whole length of their shell, give the appearance of creeping or crawling.
   


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