| 11. | Those species have vanished without leaving a trace. |
| 那些物种已经绝迹。
|
| 12. | By my theory these allied species are descended from a common parent. |
| 根据我的学说，这些近缘的物种是由同一的祖先而来的。
|
| 13. | a creature that is atypical of its species |
| 没有其同类特性的生物
|
| 14. | the equine species |
| 马类
|
| 15. | an extinct species |
| 已灭绝的物种
|
| 16. | two related species of ape |
| 有亲缘关系的两种猿
|
| 17. | a species of bird peculiar to Asia |
| 亚洲独有的鸟种
|
| 18. | agreed denominations for various species of fish |
| 各种鱼的公认的分类
|
| 19. | a hitherto unknown species of moth |
| 至今尚不知属何种类的蛾
|
| 20. | a tailless species |
| 无尾种类
|