@austinsmith, in Lepas testudinata the carina only extends to about the base of the terga. So the specimen shown in the first and sixth photos is L.anatifera. Lepas pectinata (I guess you mean the fifth photo) is more squat, has stronger sculpture, and "scuta with apicobasal ridge very close to occludent margin". So now I think that all the photos show various forms of Lepas anatifera. It is a very variable species.
Jacqui Geux
2017-06-21
2017/06/21 12:37 PM NZST
Auckland,
-36.947256 174.467372 +-24m.
On a log washed up the beach, on the side of a stream.