Second vīthī of the southern (Vaiśvānara) mārga, Matsya 124.59. maitra = the asterism of Mitra, i.e. Anurādhā.
मृगवीथी Mṛgavīthī
the Deer-road · — · Libra/Scorpius (Jyeṣṭhā, Viśākhā, Maitra = Anurādhā)
Attestations
Transcribed from the Devanagari OCR of the printed edition at shloka_source_url (Achyuta Nand Jha ed., vol. 1) and checked word-for-word against two further independent scans of two different printed editions of the same commentary — Krishna Chandra Dvivedi's (https://archive.org/download/brihatsamhitawithbhattotpalavivrittipartidr.krishnachandradvivedi/Brihat%20Samhita%20%20with%20Bhattotpala%20Vivritti%20Part%20I%20-%20Dr.%20Krishna%20Chandra%20Dvivedi_djvu.txt) and A.V. Tripathi's (https://archive.org/download/JiUm_brihat-samhita-part-1-of-varaha-mihira-by-avadh-bihari-tripathi-saraswati-bhavan-granthamala/Brihat%20Samhita%20Part%201%20of%20Varaha%20Mihira%20by%20Avadh%20Bihari%20Tripathi%20-%20Saraswati%20Bhavan%20Granthamala_djvu.txt). Only glyph-level OCR artifacts that all three scans show to be artifacts (e.g. OCR रद्वव for रद्गव, श्व for श्च) have been normalised; every substantive reading is as scanned, and the two places where the scans genuinely differ are flagged in identification_notes.
FIVE INDEPENDENT SCHEMES, four of them pre-Varāhamihira, are set side by side by Utpala in ch. 9 — this is the single densest surviving witness to the vīthī system, and the database's vīthī entries hitherto rest on the Purāṇas alone. (a) DEVALA and others: nine triads straight from Aśvinī, Nāgā to Dahanā. (b) KĀŚYAPA: the same triads, given asterism by asterism. (c) VARĀHAMIHIRA'S OWN (BS 9.2–3), which starts the Nāgā with Svātī instead of Aśvinī and gives the Go-vīthī four asterisms and the Dahanā two. (d) PARĀŚARA, differing again (Airāvatī four, Vṛṣabhā two, Mṛga-vīthī two, Ājī = Anurādhā/Viśākhā/Jyeṣṭhā, Vaiśvānarī = Mūla + the two Āṣāḍhās). (e) GARGA, close to Varāhamihira. Plus (f) the SAMĀSA-SAṂHITĀ, Varāhamihira's own lost epitome, agreeing with (c). Utpala explicitly notes the clash — 'atra varāhamihireṇa saha bhedaḥ', 'here there is a difference with Varāhamihira' — and Varāhamihira himself refuses to adjudicate at 9.7. TWO NEW NAME-FORMS: MṚGAVĪTHIKĀ (Kāśyapa, 'mūlādyā mṛgavīthikā') and MṚGĀKHYĀ, 'the Mṛga-named' (Varāhamihira BS 9.3 and Garga). Content: Varāhamihira, Garga and the Samāsa-saṃhitā make it the triad from Maitra (Anurādhā, Jyeṣṭhā, Mūla), which Utpala spells out; Devala and Kāśyapa make it the triad from Mūla; PARĀŚARA reduces it to two, Tvāṣṭra (Citrā) and Hasta — a wholly different part of the sky.