CONTENTS.

A Revisional Monograph of Recent Ephemeridce or Mayflies. By Rev. A. E. Eaton, M.A.(Communicated by Sir John Lubbock , Bart., F.R.S., ex-Rresident of the Linnean Society .)

Issued in six parts as follows :—

Part

99

9 9

9 9

99

99

I-,

II.,

III. ,

IV. ,

V. ,VI.,

pp. 1- 77, & Plates I -XXIV.,

„ 77-152, „ XXV.-XLV.,

„ 153-230, „ XLVI.-LXIIL,

„ 229-281,

„ 281-319, „ LXIV., LXV.,

„ 320-352, with Index and Titlepage ,

published December 1883.„ July 1884.

„ April 1885.

„ December 1885.

„ December 1887.

„ February 1888.