Hagen.] 46 [May. 5, 



Hab. N. America. The male in the Paris Museum, the female in 

 the British Museum. 



In the Syn. Addit., in, p. 77, Baron De Selys separates the two spe- 

 cies again, perhaps inadvertently, as there is no further account given. 



10. Gomphus amnicola, d", ?. 



Gomphus amnicola Walsh! Proc. Acad. Philad., 1862, 396. — Selys, 

 Syn. Add., n, 21, 48 bis. 

 Hab. Rock Island, 111. 



11. Gomphus spiniceps, 5. 



Macrogomphus spiniceps Walsh, Proc. Acad. Philad., 1862, 389; 

 Proc. Ent. Soc. Philad., I, 256 nota. — Selys, Syn. Addit, II, 42, 3 bis. 

 Gomphus spiniceps Selys, Syn. Addit., Ill, 23, 48 quint. 

 Nympha raised. Cabot ! 5, 8, pi. 2, f. 1, male (rudimentary). 

 Hab. Rock Island, 111. ; Lawrence, Mass., July 4-24. 



12. Gomphus fluvialis, cf, 9. 



Gomphus fluvialis Walsh ! Proc. Acad. Philad., 1862, 394; Proc. 

 Ent. Soc. Philad., i, 252. — Selys ! Syn. Addit., n, 22, 48 ter. 

 Rock Island, 111., and Southern Illinois; Detroit, Michigan. 

 Nympha (raised) from Detroit. 



13. Gomphus plagiatus, cf, ?. 



Gomphus plagiatus Selys ! Monogr., 159, 54; Syn., 38, 48. — Hag. ! 

 Syn., 109, 25. 

 Hab. Maryland; Port Royal, S. Carolina. 



14. Gomphus olivaceus, ?. 



Gomphus olivaceus Selys, Syn. Addit., in, 21, 48 quart. — Hag.! 

 Hayden's Rep., 1873, 597. 



Hab. Humboldt River, Nebraska; California; (perhaps Oregon). 



15. Gomphus parvulus, cf, 9. 



Gomphus parvulus Selys! Monogr., 157, 53, pi. 22, f. 1; Syn., 37, 

 47. — Hag. ! Syn., 109, 24. 



Hab. Nova Scotia; White Mountains, N. Hampshire, June 17; 

 Maine ; Berks Co. and York Co., Pennsylvania. 



16. Gomphus Scudderi, ?. 



Gomphus Scudderi Selys, Syn. Addit., in, 24, 52 ter. 

 Hab. N. America. Unknown to me; only one female. 



17. Gomphus dilatatus, cf, 9. 



Gomphus dilatatus Ramb. ! Neur., 155, 2. — Selys ! Monogr., 123, 

 37, pi. 7, f. 3; Syn., 28, 31. — Hag. ! Syn., 103, 11; Stett. Z., xxiv, 

 373, 44 ; Proc. Bost. Soc. Nat. Hist., xvi, 359, 17. 



Hab. Georgia, May 24; Florida; Lansing, Mich. 



