| No accessory glands or copulatory organs are ever present in Lamellibranchs. |
| In general, ovarian estrogens feminize and demasculinize the developing hypothalamus and perhaps other brain areas known to control copulatory behaviors. |
| The last pair of thoracic limbs are usually modified in the male into copulatory organs. |
| In the serin, Serinus serinus, female, copulatory behavior was not significantly affected by song performance of the mate. |
| They transport the spermatophores with a copulatory organ, called the ligula, located on the tip of one of their arms. |
| Then there's the words relating to bodily functions, be that copulatory or defecatory. |
