Su' ture, the junction of two contiguous structures.
Swim' mer ets, the abdominal appendages in crustaceans.
Sym bi o' sis, an association of two animals which is mutually helpful.
Tar' sal, one of the bones of the tarsus or ankle.
Tar' sus, (1) the ankle; (2) the fifth or terminal joint in an insect's leg.
Ten' ta cles, special organs for touch; also used sometimes for other purposes.
Terrifying attitudes, protective attitudes assumed by some animals.
Tho' rax, the region of the body between the head and abdomen.
Tib' i a, (1) the shin-bone; (2) the fourth joint of an insect's leg.
Tooth, (1) an organ used in mastication; (2) a tooth-like projection.