In six places of the Iliad we hear of a particular part of the city of Troy which was built upon a height, and in which the temple of Apollo was situated (v. 446). This affords us an example of a separate name, Πέργαμος, affixed to a separate part of a city, that part apparently being the citadel. In like manner the citadel of Argos (which stood upon an eminence) had, at a later date, a distinct name, which was Larissa[145], and was said to have been derived from a daughter of Pelasgus so called[146]. Now it may have been the general rule to call the citadels of the Pelasgian towns Larissa. If so, then we can readily understand that so long as the towns themselves, or rather, it might be, the scattered hamlets, remained, the name of the citadels would be rarely heard: but when the former fell into decay, the solid masonry which the Pelasgi used for walls and for public buildings, but which did not extend to private dwellings, would remain. Thus the citadels would naturally retain their own old name, which had been originally attached to them with reference to their fortifications. This hypothesis will fully account for the absorption of the particular and separate names of towns in the original and common name of their citadels. Where an agricultural settlement was made upon ground, some particular spot of which afforded easy means of fortification, convenience would probably dictate the erection of a citadel for occasional retreat in time of danger, without any attempt to gather closely into one place and surround with walls the residences of the settlers: a measure which, as entailing many disadvantages, was only likely to take place under the pressure of strong necessity. Such I have presumed to have been the ordinary history of the Pelasgian Larissas. That which, while it flourished as a Pelasgian settlement, might be an Argos[147], would, perhaps, after a conquest, and the changes consequent upon it, become at last a Larissa. But cases might arise in which the most fertile lands, lying entirely open and level, would, on the one hand, offer peculiar temptations to the spoiler, and, on the other, offer no scarped or elevated spot suitable for a separate fortification. In such a case the name ἐριβώλαξ would be best deserved, and in such a case too the probable result would be, to build a walled town including all the habitations of the colonists. This walled town would, for the very same reason as the citadels elsewhere, be itself a Larissa: and thus this Pelasgian name might be a distinctive one in the time of Homer, and yet might become a common one afterwards. All this corresponds with the general belief on the two points, (1) that the Pelasgians dwelt, as in Attica, κωμηδὸν, and (2) that the Larissas are Pelasgian.