In cirripeds (Thoracica) , edge of tergum adjacent to carina, occluding with carinal margin of opposed tergum [Moore and McCormick, 1969].
(Subclass Cirripedia):
Edge of any plate adjacent to carina; occluding with carinal margin of opposed tergum (thoracic Cirripedia) [McLaughlin, 1980].
Crustacea glossary. Natural History Museum of Los Angeles County. 2011.