Odonatological Abstracts

(907) BUCHHOLTZ, C.. 1971. Zur Formkonstanz des Labiumschlages der Larve von Aeschna cyanea. In: A.W. Stokes & U. Haacker, Praktikum der Verhaltensforschung, pp. 43-49. Fischer, Stuttgart. – CInst: Tierphysiol., Philipps-Univ., Ketzerbach 63, D-355 Marburg / Lahn, GFR). Instructions for laboratory experiments on the labium strike of A. cyanea for university students in a well known German edition of the laboratory course on animal behaviour. Illustrations (cinephotographs) and references on the subject are also provided. (Cf. also OA No. 69). (908) BUCHHOLTZ, C., 1971. Analyse der räumlichen und zeitlichen Bewegungsmuster von Calopteryx splendens. In: A.W. Stokes & U. Haacker, Praktikum der Verhaltungsforschung, pp. 70-75. Fischer, Stuttgart. – (Inst. Tierphysiol., Philipps-Univ., Ketzerbach 63, D-355 Marburg / Lahn. GFR). Instructions for field observations and experiments on the behaviour and territoriality of C. splendens for university students in a well known German edition of the laboratory course on animal behaviour. Illustrations and references on the subject are also provided.