1875.] 51 [Hagen. 



Cordulegaster obliquus Selys! Monogr., 349, 116, pi. 18, f. 5; Syn., 

 89, 113. — Hag. Syn.! 116, 4; Stett. Z., xxiv, 373, 50; Proc. Bost. 

 Soc. Nat. Hist., xvi, 356, 12. — Walsh, Proc. Acad. Philad., 1862, 

 397. 



Hab. Brookline, Mass.; Orono, Maine; Connecticut; Georgia; 

 Indiana; Illinois; Kentucky, June. 



5. Cordulegaster Diadema, d", ?. 



Cordulegaster Diadema Selys, Ann. Soc. Belg., xi; Proc, 68; Syn. 

 Addit., II, 40, 108 bis. 



Hab. Orizaba, Cuernavaca, Mexico. Unknown to me. 



Gomphina from South A merica. 

 Herpetogomphus. 



1. Herpetogomphus Menetriesii, ?. 



Ophiogomphus Menetriesii Selys, Syn., 20, 20. — Syn. Addit., in, 

 App., 75. 



Ophiogomphus crotalinus Selys! Monogr., 75 nota. — Hag. Syn., 312. 



Hab. Brazil. 



The short description of the male was taken from a diagnosis made 

 long before the publication of the Monograph; the only female at 

 hand slightly differed from H. crotalinus. Other specimens are needed 

 to confirm the identity or nonidentity with H. crotalinus. 



Neogomphus, 



1. Neogomphus molestus, d 1 ', 9. 



Brogomphus molestus Hag.! Foerhdl. Dansk. V. S., 1855, 121. 



Neogomphus molestus Selys! Monogr., 183, 65, pi. 10, f. 4; Syn., 

 48, 64. — Hag. Syn.! 312. 



Hab. Salto Grande and Quillota, Chili. 



Hemigomphus elegans Selys, Syn., 48, 63, was based on a male 

 from the interior of Brazil, no longer accessible when the Monograph 

 was published, and then united with N. molestus. In the list, Syn. 

 Addit., in, Append. 80, it is given again as a different species, but 

 no description added. 



Cyanogomphus. 



1. Cyanogomphus Waltheri, d". 



Cyanogomphus Waltheri Selys, Syn. Addit., in, 27, 53 ter. 

 Hab. Rio Janerio, Brazil, November. 

 One male; unknown to me. 



