HYMENOPTERA. 45 



1842 ; and by myself in Sandhills, July 30th, 

 1868. 



1. Nysson spinosus, Fab. Of frequent occurrence, but 



not common, on flowers from May to July. 



2. N. interruptus, Lat. Of frequent occurrence, but 



not common, on flowers from May to July. 

 1. Gorytes mystaceus, Linn. Of frequent occurrence, 



but not common, on flowers from June to 



August. 

 1. Mellinus arvensis, Linn. Common on flowers 



from July to September. 

 5. M. sabulosus, Fab. Common on flowers, July and 



August. 



1. Trypoxylon figulus, Linn. Common on trees from 



June to August. 



2. T. clavicerum, St. Farg. Common on trees from 



July to September. 



1. Crabro clavipes, Linn. Common on trees from 



July to September. 



2. C. tibialis, Fab. Common on trees from July to 



September. 



3. C. signatus, Panz. Very rare. A single specimen 



only was taken by myself off wood in the 

 withy bed, June 20th, 1867. 



4. C. cephalotes, Panz. Common on wood, July and 



August. 



5. C. cribrarius, Linn. Common, July and August. 



6. C. xylurgus, Shuck. Common, July and August. 



7. C. vagus. Fab. Common from June to August. 



