OF NOKTHTJMBSELAND AND DUEHAM. 161 



19. A. Collinsonana, Kirby. Smith, Monog., 104, 65 ; Melitta 

 Collinsonana, Kirby, Mon. Ap. Angl., 11., 153, 93 J ; 

 Melitta pro xhna, Kirby., Mon. Ap. Angl., II., 146, 95 ?. 



Not uncommon at Gibside, and near Lanercost. July. 

 Family 2. APID^, Leach. 

 Sub-Family 2. CUCULIN^, Latr. 

 Genus 1. NOMADA, Fah. 



1. N. ruficornis, Linn. Smith, Monag., 118, 1 ; Apis riift- 



cornis, Kirby, Mon. Ap. Angl., II., 210, 27. 



Abundant throughout the district. 



2. N. ocJirostomu, Kirby. Smith, Monog., 122, 4; Apis och- 



rostoma, Kirby, Mon. Ap. Angl., II., 209, 26. 



This fine species is only of rare occurrence with us. I have 

 taken it at Long Benton, Ouseburn Dene, and Lanercost, in 

 May and June. 



3. N. borealis, Zett. Zetterstedt, Insecta Lapponica, 470, 1 ; 



Smith, Monog., 123, 5. 



Bather abundant throughout our district, and in the east of 

 Cumberland. It appears early in April, and frequents the bur- 

 rows of Andrenna Clarkella. It is a very variable species both 

 in size and colour ; some of the specimens, especially the smaller 

 ones, are so much maculated with ferruginous markings as to 

 closely resemble dark forms of ruficornis. In this case the spines 

 of the posterior tibia furnish reliable specific characters. Those 

 of ruficornis being weak, pale coloured, and few in number, 

 whilst in borealis they are strong, black, and numerous. The 

 latter, too, has the thorax less pubescent, more glossy, and of a 

 deeper black than ruficornis. 



4. N. ccanthosticta, Kirby. Smith, Monog., 128, 9; Apis xan- 



thosticta, Kirby, Mon. Ap. Angl., II., 212, 28; Nonutda 

 mistura, Smith, Monog., 133, 15. $ . 



Of rai'e occurrence, both in the vicinity of Newcastle and 



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