Caturpitha (Chaturpita, Chatuhpitha, etc.) means "Four Seats," and it's one of the 13 Tantras of Marpa, included in the Kagyu NgakDzo. In Tibetan it's "Dorje DenShi" or rdo.rje.gdan.bzhi.
This is an Anuttarayogatantra of the Mother Class. See Kongtrul's Encylopedia, Book 8, part Three: Systems of Buddhist Tantra
for more info. If you can read Tibetan, Taranatha wrote a manual related to the practice, as well.....there's other stuff on TBRC.
It's not very well known, in comparison to most of the other Tantras of Marpa's traditions. But 17th Karmapa instituted the practice of these in various Karma Kagyu monasteries; Den Zhi is practiced at Pullahari (Jamgon Kongtrul's place In Nepal). There's a Yabka practice including a 62 deity mandala, and the Yumka which is, I think, a 15 deity mandala. Also, in the past few months Gyaltsap Rinpoche hosted a huge Drupcho at his monastery, where each of these practices was done suimultaneously by the various monastic bodies, at one place.
Here's a picture of the Denzhi Tormas and shrine...