NORTHUMBERLAND AND DURHAM. 207 



17. Geotrupus imtridarius^ }Lsch.=stecon'a)'ius, et punctdto- 

 striatiis, Stepli. Exceedingly common, but hitherto cou- 



• founded with stercorarkis^ Linn. 



18. Haltica Jlexuosa, Marsh. Equally abundant, and quite as 



destructive as the common turnip-flea (//. nemoruin), but 

 from its great similarity, mixed up in my collection with 

 that species. I have taken and received specimens of it 

 from nearly all parts of the district. 



DIPTEEA. 



Pulex Imperatorj Westwood. A friend of mine, resident in 

 Gateshead, brought an immense flea, which he had found 

 in his bed, for my examination. Not being able to 

 identify it, I forwarded the creature to J. 0. Westwood, 

 Esq., by whom it has been described as new, under the 

 above appellation, in a paper recently read before the 

 Linnaean Society. 



THOS. JNO. BOLD. 



Long Benton, May 16, 1857. 



