OF NORTHUMBEKLAND AND DURHAM. 163 



breeds in decaying willows. The males frequent the blos- 

 soms of the apple and pear trees ; and I once took a fine series 

 of the females by watching a clayhole from which they were 

 carrying clay. I have taken the female feeding on the flowers 

 of the common bramble. 



2. 0. xcmtliomelana, Kirby. Smith, Monog., 165, 4 ; Apis 



xanthomelana, Kirby, Mon. Ap. Angl., 11., 246, 46. 



Eare. The only known local specimen is a large male, which 

 was taken near Axwell Park, by Mr. J. Hardy. 



3. 0. cBnea, Linn. Smith, Monog., 170, 9 ; Ajns miea, Linn., 



Faun. Suec, 421, 1695 $ ; Apis ccBrulescens, Faun. Suec, 

 421, 1696 $ . 



Burrows in posts and rails, occurring sparingly all over our 

 district. June and July. 



Genus 4. MEGACHILE, Latr. (In part.) 



1. M. centuncularis, Linn. Smith, Monog., 174, 1 ; Apis 

 centuncularis, Linn., Faun. Suec, 420, 1687. 



Also generally distributed, but is by no means common. It 

 breeds in decaying wood. I have taken it in June and July. 



2.. M. circumcincta, Kirby. Smith, Monog., 180, 7; Ajois cir- 

 cumcincta, Kirby, Mon. Ap. Angl., II., 246, 45, t. 16, 

 f. 10 ? . 



Abundant, especially on the sea coast, where it burrows in 

 dry banks, and forms its nest of the leaves of Rosa spinosissima. 

 In gardens it selects the smoother leaves of the French roses. 

 It breeds in large communities, and is in most abundance in 

 June and July. 



Genus 5. CHELOSTOMA, Latr. 



1. C. florisomne, Linn. Smith, Monog., 189, 1 ; Ajns ffori- 

 sonmis, Linn., Faun. Suec, 413. 



Common, breeds in gate posts, preferring those of hard oak. 



