" Formica ammon ^HNS, Latr.

Very like the two last, body black, striated, with a few hairs; thorax ashy; anterior angles advanced; posteriorly the lateral angles prolonged into a large, straight spine, pointing backwards; abdominal pedicle large, triangular; with the upper angles prolonged into a very long curved spine, directed backwards; abdomen covered with a silky golden down - length [[...]] th lines. From Southern Asia.