A Guide to the Study of Fishes, Volume 1 (of 2)Note 52 — Chapter XV · ISTHMUS BARRIERS SEPARATING FISH FAUNASReading editionAs Crenilabrus, Labrus, Symphodus, Pagellus, Spondyliosoma, Sparisoma.◇Copy noteReturn to CHAPTER XV. ISTHMUS BARRIERS SEPARATING FISH FAUNAS