ACRIDID^. 



609 



fl. Brazil. 



Genus MONACHIDIUM, C. D. S. 546. 



MONACUIDIUM LUNUS, C D. S. 54t). 



Genus CYRTACANTHACRIS, C. D. S. 550. 

 The few following species of this genus and of Acriditim were omitted 

 in the preceding pari of this Catalogue. 



America. 



A. Wings longer than the abdomen, 

 a. Tip of the vertex hexagonal. 

 * Fore wings with markings, 

 f Spines of the hind tibiae white. 



+ Prothorax with two concise stripes. 



§ Head short. . - - - 



§§ Head slightly elongated. 

 X Pectus piceous. - . - . 



X X Pectus pale. _ . - - 



\\. Prothorax without two concise stripes. 



§ Hiud wings not yellowish. 

 X Hind femora streaked on the inner side. - 

 X X Hind femora not streaked on the inner side. 

 §§ Hind wings yellowish. - . - 



If Spines of hind tibiae yellowish. 



X Keel of the prothorax distinct. 

 IX Keel of the prothorax indistinct. - 

 ** Fore wings without markings. 



f Spines of hind tibiae pale. 



X Prothorax concisely striped. 



§ Stripe of the prothorax rather broad. - 

 §§ Stripe of the prothorax narrow. 

 §§§ Stripe of the prothorax very narrow. - 

 ++ Prothorax not concisely striped. - 

 IIX Prothorax not striped. - - - 



f f Spines of the hind tibiae black. 



b. 'J'ip of the vertex elongate-subquadrate. 



c. Tip of the vertex conical. 

 B. Wings not longer than the abdomen. 



a. Fore wings with black spots. 



b. Fore wings not spotted with black. 



Americana. 



1 



pecloralis. 



viridescens. 



inscripta. 



subspurcata. 



impleta. 



subvittata. 

 simulatrix. 



parvula. 



alutacea. 



unilineata. 



septentrionalis. 



concolor. 



diversifera. 



munda. 



differentialis. 



cribrata. 

 Milberti. 



Cybtacanthacbis alutacea. 

 Acridium alutaceum, page 577. 



a, h. St. John's Bluff, E. Florida. Presented by E. Doubleday, Esq. 

 c. United States. Presented by F. Walker, Esq. 



