| Description | Letters from B I Tschernychev, Tschernychev Museum, Leningrad, U.S.S.R (Saint Petersburg, Russia).
Correspondence regarding Cirripedia specimens, as well as correspondence regarding a gift of Ceratiocaris specimens from the British Museum (Natural History) as acknowledgement for a gift of Carboniferous Cirripedes specimens from the Tschernychev Museum. |