New observations on the genus Pneumonyssus Banks (Mesostigmata)
Fain, A.  Dendrouropoda vallei, nov. spec. (Urop.)
Sellnick, M.  A new Bryobia, B. ulicis - Notulae ad Tetranychidas 7
Eyndhoven, G.L.v.  Complementary note on Tetranychus neocaledonicus André
André, M.  Study of the sexual characters of Trombidioidea
Feider, Z.  A new French species of Valgothrombium. V. feideri n. sp.
André, M.  New or unknown mites (Harpyrhynchidae, Listrophoridae), parasites of birds and mammals
Lawrence, R.F.  Revision of the species Rhombognathus (marine Halacarids), described by Edouard L. Trouessart
Newell, I.M. and André, M.  Polypterozetes cherubin Berl. 1916 (Oribate)
Grandjean, F.