James Duncan,
The Naturalist's Library
(1840)
“ In intimate connection with the coxa, but capable of independent movement, is a small piece named the trochanter. Its form is subject to many changes, but it is most commonly triangular or quadrangular, often prolonged into a lateral point. It articulates with the coxa, sometimes by ball-joints entering corresponding sockets, or simply by a membrane, the latter being generally the case when the shape is annular, as among the Diptera. Its union with the succeeding part of the leg, namely the thigh (femur) , is usually much closer. ”
