juvenile elicits play by stepping on reclining partner. Often response of younger partner to older partner who lies supine in playsoliciting posture. Goodalls Ride onto. 7. See video. S step over Step over another lying on ground, who shows no response to stepping individual. No obvious function. 7. See video. step up on leg Infant steps onto leg of mother in climbing up to ride on her back. 5. See video. stepping-stick Branch used as sandal to avoid sharp thorns when moving in kapok tree. Reported from Tenkere. Absent at Mahale. See also seat-stick. stingless bees 181 stingless bees Small, colonial, honey producing bees of genus Trigona. See eat insect. stir water Stir water vigorously with hand, index finger, large leaf, or foot in river. Solo play of