LOCUSTlDiE. 307 



15. CONOCEPHALUS NIGRIDENS. 



nigvidens, Burm. Handb. Ent. ii. 704. 

 Brazil? 



16. CoNOCEPHALus BREvicAUDA (Nomcn bis ledum), 

 brevicauda, Scud. 

 Napo River. 



17. CoNOCEPHALUS TENUICAUDA. 



tenuicauda, Scud. 



Napo or Maranou. 



18. CoNOCEPHALUS XIPHIAS. 



Loeusta xiphias, Euc. Meth. x. 342 — Conocephalus xiphias, Serv. Rev. 52; 

 Hist. Orth. 516. 



Cayenne. 



a. Santareni. From Mr. Bates' collection. 



19. CoNOCEPHALUS IRRORATUS. 



irroratus, Burm. Handb. Ent. ii. 705. 

 Brazil. 



20. CoNOCEPHALUS M AXILLOSUS. 



Loeusta maxillosa, Fabr. Ent. Sijst, ii. 37 — Conocephalus raa:<illosus, 

 Serv. Rev. 52 ; Hist. Orth. 520. 



a. Brazil. From Mr. Mornay's collection. 



21. CoNOCEPHALUS DENTIFRONS. 



dentifions, Sauss. Rev. Zool. 1859, 207. 

 Bahia. 



22. CoNOCEPHALUS GRACILLIMUS. 



Mas. Viridis., tenuis; caput et prothorax punctata, albido biviitata ; 



fastigium conicum, perparum ascendens, apice obtusum, basi subtus 



denialum ; antenna pice <s, basi pallidce ; prosternum bispinosum ; 



pedes gracillimi, femoribus posticis tibiisque spinulosis ; alee longa., 



diaphance, viridi venosce. 

 Male. Green, very slender. Head and prothorax punctured, with 

 two whitish stripes which slightly diverge from each other hindward. Cone 

 of the head very slightly ascending, longer ilian the distance between the 

 eyes and the hind border, obtuse ai the tip, obtusely dentate beneath at its 

 base. Antennge piceous, pale towards the base, full twice the length of the 

 body. Prothorax with the flat dorsum slightly widening hindward. Legs 

 very slender; prosternum armed with two long slender spines; tibi^s 



