RHYNCHOTA. 
496 
Dahlb., Saida littoralis, lt.,flavipes, F., riparia, Fall., hifasciata,Thoms., 
orthochila, Fieh. ^fucicola, J. Sahib., and saltatoriaf L., Miris holsatus, 
F., Teratocoris, Hydrometra aspera^ Schum., Deltocephalus ahdominalis^ 
F., Euides speciosaf Boh., Lihurnia lugubrinaf Boh., and L. venosa^ Germ. 
(Reuter, O. M.) Remarques sur le Polymorphisme des Hemipteres. 
Ann. Soc. Ent. Fr. (5) v. pp. 225-236. 
Discusses polymorphism of the wings, styled by the author Pterygo 
polymorphismus. After an investigation of former observations on this 
subject, the following conclusions are deduced : — 1, the macropterous 
form is the primitive one, brachypterous forms being produced by 
natural selection at a more advanced period, and the rare occurrence of 
macropterous individuals of a dimorphic species being a reversion ; 2, 
abbreviation of wings is possibly produced by different causes, in species 
living with ants it arises from the manner of life of those insects, and. is 
a case of imitation or mimicry ; 3, species living in localities where the 
wings are not much needed and the legs are important, gradually under- 
go an atrophy of the former and development of the latter ; 4, the 
active $ , more obliged to use his wings, frequently has them developed 
by heredity, when the $ is brachypterous. The author himself raises 
the objection that there are brachypterous species with no proportionate 
development of legs, and that mere climate evidently influences the 
question. The following classification is proposed : — 
1. Species pterygo-trimorphae (macropt., intermed., brachypt.). 
2. „ pterygo dimorphte (macropt. and brachypt.). 
2 a. Species pterygo-gynaeco-dimorphae ( $ only dimorphous). 
h. „ pterygo-holo-dimorphac ( ^ ? dimorphous). 
aa. Species pterygo-hetero-dimorphae ( $ dimorphous in a dif- 
ferent way to $ ). 
hh. „ pterygo-homo dimorphae ( ^ &’ $ equally dimor- 
phous : the majority). 
Insects with different degrees of wing abbreviation are termed Species 
pterygo crypto-dimorphae, and S. p.-phanero-dimorphae. 
Uhler, P. R. List of Ilemiptera of the Region west of the Mississippi 
River, including those collected during the Hayden explorations of 
1873. In Bulletin of the U. S. Geological and Geographical Survey 
of the Territories, F. V. Hayden in charge, 1874 & 1875, i., Wash- 
ington : 1875, 8vo, pp. 267-361, pis. xix.-xxi. 
Contains descriptions of new genera and species. In spite of the 
dates given, it is very doubtful whether this portion was not published 
until 1876. The plates are very rough, and contain figures of various 
previously known N. American species. 
List of Mediterranean species ; G. C. Champion, Ent. M. M. xii. p. 79. 
S. Africa. 93 species (including some new) enumerated by H. D. J. 
Wallengren, Insecta Trausvaaliensia, iii., Hemiptera, CEfv. Ak. Forh. 
xxxii. No. 1, pp. 132-137. 
Northern Peru. P. R. Uhler, P. Bost. Soc. xvii. pp. 282-286, gives a 
list of species (2 new) obtained by Prof. James Orton. 
