2T9 



INSECT MIGRATION AT HELIGOLAND. 



Contributed r,v JOHN CORDEAUX, M.B.O.U. 



In the notice of Heligoland as given in the January number of T/ie 

 Naturalist I have very briefly alluded to the insect migration as 

 observed on that island. I am not aware that any list, partial or 

 complete, of the diurnal and nocturnal lepidoptera in Mr. Gatke's 

 collection has been published, excepting a short notice by M. Edm. 

 de Selys-Longchamps in a paper which originally appeared in the 

 ' Bulletin de la Societe Zoologique de France,' t. vii. 1882, under 

 the title of ' Excursion a File d'Helgoland en Septembre 1878.' 

 This paper, of which, through the kindness of the author, I possess 

 a separate copy, has reference almost exclusively to the migratory 

 avi-fauna of Heligoland ; in the concluding paragraph, a translation 

 of which is here given, there is a short notice and list of butterflies 

 and moths which have from time to time occurred. 



M. de Selys-Longchamps says ' Mr. Gatke is not an entomologist, 

 but he has collected all the insects that he has been able to meet 

 with in Heligoland. Subjoined is a list of the Diurnal Lepidoptera 

 and the Sphingidae that I saw in his cases. I took the names very 

 hurriedly ; however, I do not think there is any serious error. The 

 species of Diurni which are preceded by an asterisk are those 

 found as a rule nearly every year. The others have been collected 

 only very accidentally. 



DIURNI (RHOPALOCERA). 



*Papilio machaon. 



Vanessa antiopa. 



Papilio podalirius. 



* Vanessa C -album. 



Aporia cratsegi. 



*Vanessa atalanta. 



* Pier is rapce. 



*Vanessa cardui. 



*Pieris napi. 



Argynnis dia. 



*Pieris brassicoe. 



Argynnis lathonia. 



*Leucophasia sinapis. 



Argynnis aglaja. 



Colias palfieno. 



Argynnis paphia. 



Colias hyale. 



Melitrea didyma. 



Colias ecUisa. 



*Satyrus semele. 



*Rhodocera rhamni. 



Melanargia galatea. 



Polyommatus phlreas. 



I'arargc mivra. 



Polyommatus hippothoe. 



Pararge mega^ra. 



Lycrena acis. 



Pararge xgeria. 



Lycrena arion. 



Coenonympha pamphilus. 



LycDsna icarus. 



C(ienonyn-)j)ha tiphon. 



Apatura iris. 



Crenonympha iphis ? 



Limenitis sibylla. 



Epinephele janira. 



Vanessa polychloros. 



Epincphcle tithonus. 



*Vanessa urticre. 



Epinephele hyperanthus. 



^Vanessa io. 



Hesperia comma. 



July 1888. 



