Vṛddhagargasaṃhitā

A dialogue on astrology between Nārada and Vṛddhagārgya or Vṛddhagārgi (as the purāṇa entitled Gargasaṃhitā also involves Nārada and Garga along with others).

Alternatively:

A dialogue on astral and other omens between Krauṣṭuki (Ṛṣiputra) and Garga in many adhyāyas. The following table of contents, though based on several manuscripts, is not definitive.