SNODGRASS1 based his interpretation of the female genitalia of the higher insect orders on the condition in Machilidae. In this family the ovipositor on the eighth and ninth segments is derived from the limb bases. The limb bases of the eighth segment (first genital) may be termed the first gonocoxae (1Gx) with the styli, the first gonostyli (1Gs) and the appendages, the first gonapophyses (1Gpo). Similarly, the ninth segment bears the second gonocoxae (2Gx), second gonostyli (2Gs) and second gonapophyses (2Gpo).