Skandapurana 6.3.1.30

6.3.1.30

tathātra caturlakṣaṃ saṃkṣepeṇa niveśitam .
purāṇāni daśāṣṭau ca sāmprataṃ tadihocyate .
nāmatastāni vakṣyāmi śṛṇu tvamṛṣisattama .. 1.30 ..

while here it has been concisely arranged into four hundred thousand. / The eighteen Purāṇas are now stated here; / I shall speak of them by name: listen, O best of seers! (1.30)