NORTHUMBERLAND AND DURHAM. 9 



10. A. pusillus, Schaum ; A. atratus, W. C. 

 In woods. Bather uncommon. 



11. A. fuliginosus, Panz. ; A. atratum, Trans. CI. I., 42; A. 



piceum, 1. c. 



12. A. micans, Nicol., 1. c. 



13. A. picens, Linn. ; A. picipes, 1. c. 43. 



14. A. quadripunctatus, Deg., 1. c. 42. 



A single specimen, taken at Long Benton, is the only known 

 British example. 



OLISTOPHUS, Dej. 

 1. 0. rotundatus, Payk., 1. c. 43. 



PTEROSTICHUS, Auct. 



(PCECILUS, ABAX, PLATYSMA, PTEROSTICHUS, STEROPUS, 



OMASEUS, ARGUTOR, AND PLATYDERAS, Cat.). 



1. P. puncticeps, Thomson; P. cupreus, 1. c. 44. 



Front of head distinctly punctured ; hind tibia with about ten 

 bristles on its inner side. 



2. P. pauciseta, Thomson ; P. versicolor, 1. c. 



Front of head smooth ; hind tibia having only about six bris- 

 tles on the inner side. * 



The last is by far the most abundant with us. 



3. P. striola, Fab., 1. c. 46. 



4. P. niger, BL, 1. c. 



5. P. parwnpwictatus, Germ., 1. c. 45. 



6. P. madidus, Fab., 1. c. 



7. P. (Btliiops, Panz., 1. c. 



Bare. Cheviot, Twizell, and Lanchester. "Bothley," Dr. 

 Power. 



8. P. orinomus, Steph., 1. c. 44. 



Bare. Cheviot, South Shields, and Langley Common. 



9. P. melanarius, 111., 1. c. 

 10. P. nigrita, Fab., 1. c. 



