Contents

13 December 1974
Vol 186, Issue 4168

About The Cover

Tandem running of ant (Leptothorax acervorum). (Top to bottom) Recruiting worker assumes calling position; nestmate arrives and touches the gaster and hindlegs of the calling ant with its antennae; and calling ant lowers its gaster and tandem running starts. The sting of the recruiting ant remains extruded, but it is not dragged over the surface. See page 1046. [Michael Möglich, Museum of Comparative Zoology, Harvard University, Cambridge, Massachusetts]