Pattern is no longer available from original source but is available online at Patternfish and Shelridge Farm.

This colorful, modular knit shawl will make you feel like a swallowtail butterfly floating about the room! An easy eyelet stripe pattern guides you around the mitered triangles. The notches above the elbows and “tails” are just for fun. Four tassels finish the corners.

Pattern sample made with 3 colourways.

Blocked gauge 3 sts = 1”

Also available from Shelridge Farm: https://www.shelridge.com/product_info.php?products_id=242