Notes on the Ephemeridce. 383 
Page 5. 1767. — In Pallas's own copy of Lin. S. N. 
xii. are the following notes in his handwriting. To Eph. 
striata is appended " Eph. Sihirica diptera triseta, setis 
villosis .... insecta minima a Laxmannio notavi. 
Dantur dipterse plures species, Pallas Ephemera biseta 
corpore testaceo, thoracis dorsi pedibusque anticis nigris, 
quatuor reliquiis setisque albidis, alis quatuor hyalinis, 
collum subdistinctum, caput depressum, oculis lateralibns 
prominentibus. Ad Ubam Junio 1777 magnitudine 
media. Videtur esse Eph. culiciformis ^^ with the citation 
of Geoffi'oy. To E. lutea Avith (?) he adds " lineolis longi- 
tudinalibus nigris. In Uralensis montibus aquis Junio 
copiose." 
[Of these E. Sihirica is doubtless a Ccsnis ; the species 
referred to E. culiciformis is probably an Heptagenia ; 
and to this last genus most likely belongs the subject of 
the appendix to E. lutea.~\ 
Page 5. 1767. — O. F. Midler, in Flora Friedrichs- 
dalina, p. 235, gives, as additions to his Fauna Fried., 
the names only of E. culiciformis, horaria and diptera. 
Page 5. [1771. — The fig. 13 may prove to be the gill 
of Z/. mar(jinata.~\ 
Page 6. [1776. — Mill. For russula read rufiila.~\ 
Page 7. 1794. — Seetzen gives some very interesting 
observations on the habits and life-history, from oviposi- 
tion and egg upwards, of his E. lutea, which I believe is 
P. virgo. He is one of the real observers. I believe you 
will find Meyer's Mag. f- d. Thiergesch. in the British 
Museum. 
Page 7. [1805. — E. Swammerdia7ia in the note should 
be printed in ordinary type.] 
Page 7. [1814.— T. Gray. The Works of Thomas 
Gray, edited by T. J. Mathias, 4to. London, vol. ii., 
p. 572. The late J. C. Dale, Esq., drew my attention, 
in 1868 or 1869, to a version of the Linnfean diagnosis of 
the orders and genera of insects done into hexameter verse 
by the poet. It is only a fragment. Ephemera is dis- 
posed of thus: — 
Cauda setigera, erectis stat Ephemera pennis.] 
TRANS. ENT. SOC. 1873. — PART III. (aUG.) E E 
