1874.] 359 [Hagen. 



15. Gomphus pilipes, quoted by me Stett. Zeit., xxiv, 373, 

 belongs to the male in Escher's collection in Zurich, and is perhaps 

 doubtful. 



16. Gomphus spinosus. Male No. 11. Brit. Mus., June 6. 

 Very common. 



I saw a type specimen from Abbot in Mr. Escher's collection. 



17. Gomphus dilatatus. Male No. 14. Brit. Mus., May 24. 

 Not very common, 



I possess a male type from Abbot. 



18. G. minutus. Female No. 21. Brit. Mus , March 29. 

 Common. Male, No. 53, LeConte. 



I possess a male type from Abbot, described in the monograph. 



Family CORDULINA. 



19. Macromia tseniolata. Male, No. 2. Brit. Mus. Flies 

 mostly in the evening, not very common, June 20. Male, No. GO. 

 LeConte. In Synops. Cordulines, p. 91. 



De Selys supposes the male in my collection with the anterior trian- 

 gles without any transversal vein an anomaly, but Abbot's figure, 

 otherwise correct for the details of neuration, represents the triangles 

 also without transversal vein. The eyes are bright green, the spots 

 sulphur yellow. The species seems to be very rare, at least not rep- 

 resented in American collections. 



20. Macromia transversa. Male, No. 53; female, No. 54, 

 LeConte; female, No. 10, Brit. Mus., March 27. I have seen $ 

 female sent by Abbot to Mr. Escher Zollikofer. 



There was no male in European collections, and the description of 

 the male was taken from Say's paper. This species is widely dis- 

 tributed. I have seen it from Vermont, Massachusetts, New York, 

 Pennsylvania, Washington, South Carolina, Georgia, and nymphse, 

 which I am unable to separate from the typical ones, from Detroit, 

 Michigan. The abdomen has elongated yellow dorsal bands on seg- 

 ments two to seven. 



21. Epitheca princeps. Female, No. 3. Brit. Mus., May 7. 

 Flies very high and swift, and is difficult to take ; the eye of the male 

 is green ; rare. 



Abbot's figure is very large (length 84 mill.; alar exp. 123 mill.), 

 perhaps somewhat magnified, The largest specimen I have seen is a 

 male from Georgia, communicated bv Abbot to Mr. Escher Zollikofer^ 



