Hagen.] 44 [May 5j 



OCTOGOMPHUS. 



1. Octogomphus specularis, <?, ?. 



Neogomphus? specularis Selys! Syn. Add., I, 18, 64 bis. — Hag. 

 Syn. ! 110, 27. 



Octogomphus specularis Selys ! Syn. Addit., ill, 32, 64 bis. 

 Hab. Ft. Tejon, Cal. ; San Mateo and Crystal Springs, Cal. 



Dromogomphus. 



1. Dromogomphus spinosus, d", 9. 



Dromogomphus spinosus Selys! Monogr., 120, 35, pi. 7, f. 2; Syn., 

 40, 51. — Hag. Syn.! 102, 8; Stett. Z., xxiv, 373, 43; Proc. Bost. 

 Soc. Nat. Hist., xvi, 359, 16. 



Gomphus spinosus Hag.! Foerhdl. Dansk. V. S., 1855, 125. — 

 Walsh ! Proc. Acad. Philad., 1862, 391. 



Hab. Georgia, June 6 ; Bee Spring, Kentucky, June; Des Plaines 

 River, near Chicago, 111. ; Dallas, Texas. 



2. Dromogomphus spoliatus, e. 



Gomphus spoliatus Selys! Monogr., 409, 36 bis, pi. 21, f. 1; Syn. 

 Addit., i, 17, 32 bis. — Hag. Syn.! 103, 10. 

 Hab. Pecos River, Western Texas. One male known. 



3. Dromogomphus armatus, d 1 . 



Gomphus armatus Selys ! Monogr., 122, 36 ; Syn., 40, 50; Addit., 

 in, 54, 52. — Hag. Syn. ! 102, 9. 



Hab. N. America. One male in the British Museum known. 

 After a repeated and detailed examination of the typical male, 

 Baron De Selys Longchamps is sure of the difference from D. spolia- 

 tus. I noted down in 1861, after my examination of the same male, 

 that D. spoliatus is only the teneral stage of D. armatus. 1 



Gomphus. 



1. Gomphus pallidus, ?. 



Gomphus pallidus Ramb. ! Neur., 163, 12. — Selys! Monogr., 145, 



1 The diagram of the appendages and genital parts of D. armatus, made by my- 

 self in London, if correct, are different from those of D. spoliatus, and would 

 justify the statement of Baron De Selys Longchamps. The superior appendages 

 of D. armatus are, viewed from the side, longer and sharply pointed; the inferior 

 shorter, reaching about the angles of the superiors. The hamulus is longer than 

 in D. spoliatus. 



