156 MR. BOLD ON THE ACULEATE HYMENOPTEEA 



2. C. Daviesana, liirby. Smith, Monog., 6, 4 ; Melitta Da- 

 viesana, Kirby, MSS., II. 



Gibside, Lumley, and a little to the west of Gilsland. Sep- 

 tember. It burrows in the sides of sand-pits, placing its pretty 

 cocoons in a row end to end. Some cocoons that I collected 

 produced numbers of small leaping Hymenoptera, as well as the 

 Bees. 



Gei^us 2. SPHECODES, Latr. 



1. S. gibbus, Linn. Smith, Monog., 16, 1; Mellita Spheco- 



ides, Kirby, Mon. Ap. Angl., II., 46 ; Militta mo7iilicornis, 

 Kirby, 1, c, 47, t., 15, f. 6. 

 " Ornsby's Durham, 206, Castle Eden Dene." Near Axwell 

 Park, Mr. J. Hardy. 



2. 8. ephipina, Linn. Smith, Monog., 19, 4 ; Melitta Geof- 



freella, Kirby, Mon. Ap. Angl., II., 45, 8, t. 15, fig. 5. 



An abundant species, which I have taken in Northumberland, 

 Durham, and Cumberland. 



Genus 3. HALICTUS, Latr. 



1. H. rubicundus, Christ. Smith, Monog., 23, 1 ; Melitta ru- 



bicunda, Kirby, Mon. Ap. Angl., II., 53, 14. 



Exceedingly abundant throughout our district, breeding in 

 banks, and I have occasionally seen good-sized colonies of it 

 in foot-paths. 



2. H. cylindricus, Fab. Smith, Monog., 30, 9 ; Melitta ab- 



dominalis, Kirby, Mon. Ap. Angl., II., 73, 303' ; Meritta 

 fulvocincta, Kirby, 1. c, 28 ?. 



Also a very common species in our district, and in Cumberland. 



3. H. albipes, Fab. Smith, Monog., 32, 10; Melitta albipes, 



Kirby, Mon. Ap. Angl., II., 70, 29. 



Somewhat rare, Ouseburn Dene, Axwell, and Gibside. 



