158 THE SUBSTITUTE. 
entomologists. There are so many 
reasons then why entornolqgists 
should unite that we offer this 
suggestion to the earnest conside- 
ration of the brethren of the net 
scattered throughout the country ; 
and if we can be of any use in the 
cause our pages are at their ser- 
vice. We should also be glad to 
know' of the existence of any en- 
tomological associations already 
formed, and to hear something of 
their doings. 
TO COKRESPONDENTS. 
All communications to he authen- 
ticated bt/ the name of the writer, 
and to he addressed To the Edi- 
tor OF ‘The Substitute,’ 9, 
Devonshike Street, Bishops- 
OATE Street, London, N.E. 
It is particularli/ requested that 
all Names of Insects may be written 
plainly and ivithout abbreviation, 
and that they may be atranyed in 
the order of any of the printed lists. 
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tvaitfor room. 
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DUPLICATES AND DESIDERATA. 
Lepidoptera. 
DUPLICATES. 
Papilio Machaon, , 
Polyoininalus Alsus, 
„ Adonis, 
ChcEiocampa Elpenor, 
Euchelia Jacobaeae, 
Liihosia rubricollis, 
Oigyia caenosa, 
Semaphora Psi, 
Nonagria Typhae, 
Cei'igo Cytherea, 
Polia flavicincta, 
Aplecta advena, 
„ nebulosa, 
„ herbida, 
Phlogophora meticulosa, 
Thyatira Batis. 
DESIDERATA. 
Trochilium, any except Ti- 
puliformis, 
Procris Globularite, 
Lipai'is chrysorrhcea, 
Clisiocarapa Castrensis, 
Zeuzera Arundinis, 
Notodonla chaonia, 
„ Dodonaja, 
Acvonycta Ligustri. 
— William C. Hall, 51, Trump- 
ington Street, Cambridge ; Janu- 
ary 1, 1857. 
CAPTURES. 
Agrotis saucia . — I have taken 
twelve specimens of Agrotis saucia 
