3).
At Selinus the Italian archaeologists discovered some years ago, in the so-called Acropolis, a town of irregular, rudely pear-shaped outline with a distinct though not yet fully excavated town-plan.

Two main thoroughfares ran straight from end to end and crossed at right angles (fig.

3), the longer of these thoroughfares being just a quarter of a mile long and 30 ft.wide.From these two main streets other narrower streets (12-18 ft.

wide) ran off at right angles; the result, though not chess-board pattern, is a rectangular town-plan.
Unfortunately, it cannot be dated.

Selinus was founded in 648 B.C., was destroyed in 409, then reoccupied and rebuilt, and finally destroyed for ever in 249.