LOCUSTIB.E. 307 



15. CONOCEPHALUS NIGBIDENS. 



nigridens, Burm. Handb. Ent. ii. 704. 

 Brazil? 



16. CONOCEPHALUS BREVICAUDA (Nomen bis leclum). 

 brevicauda, Scud. 

 Napo River. 



17. CONOCEPHALUS TENUICAUDA. 

 tenuicauda, Scud. 

 Napo or Maranun. 



18. CONOCEPHALUS XIPHIAS. 



Locusta xiphias, Enc. Meth. x. 342 Conocepbalus xipbias, Serv. Rev. 52; 

 Hist. Orth. 516. 



Cayenne. 



a. Santarem. From Mr. Bates' collection. 



19. CONOCEPHALUS IRROEATUS. 

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

 Brazil. 



20. CONOCEPHALUS MAXILLOSUS. 



Locusta maxillosa, Fabr. Ent. Sysl. ii. 37 Conocephalus maxillosus, 

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



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



21. CONOCEPHALUS DENTIFRONS. 

 dentifrons, Sauss. Rev. Zool. 1859, 207. 



Bahia. 



22. CONOCEPHALUS GRACILLIMUS. 



Mas. Viridis, tennis ; caput et prothorax punclata, albido bivittata ; 



fastiyium conicum, perparum ascendens, apice obtusum, basi subtus 



dentatum ; antenna picece, basi pallidce ; prosternum bispinosum; 



pedes gracillimi, femoribus posticis tibiisgue spinulosis ; alee longoe, 



diaphana, viridi venosce. 



Male. Green, very slender. Head and protborax punctured, witb 

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

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

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

 base. Antennae 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; tibia? 



