Annandale, N. & B. Prashad. 1921. XXVIII. The aquatic and amphibious Mollusca of Manipur. Records of the Indian Museum 22: 529-631. Available electronically.
Prashad in Annandale & Prashad, 1921. Rec. Ind. Mus. 22: 617, figs. 33B, 35.
Prashad in Annandale & Prashad, 1921. Rec. Ind. Mus. 22: 611, figs. 30-31a,b.