Roebuck : Locusts in Yoekshire. 



133 



Gryllus mlgratorius by such a distinguished entomologist as Mr. J. F. 

 Stephens in two instances, that one brought to the British Museum 

 is placed on record with the same name bj Mr. Adam White, and 

 that Mr. "W. F. Evans states that his specimen was certainly not 

 Locusta Christii, while Mr. J onathan Gouch satisfied himself that the 

 Cornish specimens were G. 7nigratorius. On the other hand Mr. 

 Frederick Bond used the name Locusta Christii for the specimen 

 taken at Kingsbury, Middlesex. 



Further, De Selys-Longchamps stated that P. migratorius was 

 abundant in South Russia in 1844, and in 1845-6-7 occurred in 

 North Germany, in Belgium, and in Sweden. In his opinion it is a 

 form peculiar to Tartary or South Russia, only appearing in West 

 Europe as an accidental visitor, though it may be reproductive here 

 for a year or two under the influence of favourable circumstances. 

 Possibly this was the case in Britain in 1846 and 1847. 



1847. 



The lo€usts again invaded England in the following year (1847), 

 though not in such large numbers as in 1846. 



On the 1 9th of August, Mr. J. S. Rudd, of Redcar, recorded that he 

 picked up on the beach at that place twelve drowned locusts, and 

 saw many others in the same state. Three were also captured alive 

 on the sand-hills, and others seen, very alert on the wing {.Zooi. 1847, 

 V. 1900). One was captured near York on the 26th August (Fred. 

 Bond, Zool. 1847, v. 1900). Three were captured on the levels near 

 Thorne, on the 8rd of September, by some harvesters, while passing 

 a field of wheat; one of them was taken on the wing (Joseph 

 Richardson; Zoo^., 1848, vi. 2001). One was taken on the 5th 

 September, in a field some distance from the town of Doncaster 

 (John Hawley; Zool., 1841, vi. 2116). 



The visitation of 1847 was even more decidedly eastern in its 

 distribution than that of the previous year. 



No specimens whatever were reported from Scotland, Ireland, 

 Wales, and the south-western counties ; only two from the southern 

 counties, at Battel, in Sussex ; only one in the north-western 

 counties, at Sunderland Point, near Lancaster ; and in the midland 

 counties we only fiad single specimens at Elton Moor in Derbyshire, 

 Stamford in Lincolnshire, Duxford in Cambridgeshire, Hertford, and 

 a few in the London district. The eastern tendency is shown by the 

 occurrence of three or four specimens about Newcastle, throe 

 specimens about Bishop Auckland, large numbers of drowned 

 examples on the coast at Redcar, single examples at Kingerlej and 



