‘ 
as II., with 10 Coloured Plates, 21s. net. 
"By GEORGE ROWDLER BUCKTON, F.RS., F.LS. 
: ‘Tobe completed in B parts. Subsoription jor the whole work, £4 14s. 64. 
The family of the Membracide aie claims on the notice of both the: scientific and 
i public. Owing to the advance of agriculture, climatic variation, and other 
ees, organic forms are constantly undergoing transformation, while some may 
en become extinct. The present time, therefore, affords opportunities for studying 
recording these forms, which may not occur again. 
he general public will find interest in the bizarre forms of these insects, while the 
ulations of the scientific mind will be exercised on the question of their utility. 
' The Membracide are also interesting from their mimetic forms, which bid be 
compas in this Monograph. 
Parts i rents: each 7s. 6d. coloured, 5s. uncoloured, net. 
By W. H. PEARSON. 
to Subscribers for the complete work only, i in ‘oad Monthly Parts.) 24 & 
res “each with 8 Plates. ae a 
Ap aeee on dec ade a 
"Now ready, Beret, with 12 Plates, lbs. ‘iain 21s, Saldared. net. 
THE POTAMOGETONS| 
(POND Weaee 
OF THE 
BRITISH. 132, E Ss. 
Wits Descriptions oF ALL THE: Spxorss, VaRIntigs, AND Hyerps._ ; 
y ALFRED FRYER, A.L.S. Illustrated by ROBERT MORGAN, F. LS. 
The work will be issued in 5 quarterly sections of 3 parte each, 
, uEronpeetis on application, : 
ee 
7, Description of the Flowering g Plants and. Ferns Indigenous 
to or Naturalised in the British Isles. pte rs 
:. ~ By GEORGE BENTHAM, BRS. 
Ith Edition, Revised by Sir J.D. Hooxrr, GE Beto 1 F. apogee Qs. net. 
