E.  Saunders, ?Notes on a British flea ? Typhlopsylla assimilis, Tasch.?, Entomologist?s Monthly Magazine 27: 170-171., 1891.

C. W.  Dale, ?The Diptera of West Cornwall.?, Transactions of the Penzance Natural History Society 3: 262-266., 1891.

C. W.  Dale, ?The Diptera of Dorsetshire.?, The British Naturalist 1(1): 3-6., 1891.