The Number of Pyloric Cæca in the Herring. (Supplement to “An Account of the Researches on Races of Herrings carried out by the Marine Biological Association at Plymouth, 1914–15.”)

Abstract

Inw “An Account of the Researches on Races of Herrings carried out by the Marine Biological Association at Plymouth, 1914–15,” Dr. J. H. Orton stated that the alimentary canal of each fish investigated was preserved for the future examination of the pyloric cæca. The present note gives the results of my counting of the latter, and the accompanying table on page 328 shows the number of pyloric cæca for each individual fish enumerated in Tables III and IV of the above publication.