By an increase in the size of this projection, with its shape, as well as that of the terminal segment, slightly modified and improved, the pincers are rendered more and more perfect, until we have at last an instrument as efficient as the chelae of a lobster. And all these gradations can be actually traced.
Irtenune honen tamainua, duen formarekin, handituz, eta orobat azken segmentuarena ere, zertxobait eraldatu eta hobeturik, gero eta pintza hobeak lortzen dira, azkenean abakandoaren kelak bezain tresna eginkorra izateraino; eta mailaketa guztiok egiazta daitezke.