Arciṣmanta (Archishmanta)  is a community of the forefathers, like Varhiṣada (Varhishada), Kravyāda (Kravyada) and so on —
arciṣmanto varhiṣadaḥ kravyādaḥ pitarastatha.

Mahābhārata (Kinjawadekar)(12.239.15)
Mahābhārata Vols. 1-43 (Siddhāntabāgīśa)(12.263.15)