86 OETHOPTEEA. 



and black flecks. These insects may be found about the edges of groves, the margins 

 of streams, and on cultivated ground where the vegetation is moderately rank. 



Table for separating the Species of Dichromorpha. 



A 1 . Normally with the tegmina and wings abbreviated, the apex of the 

 former acuminate. . 

 b\ More robust: the pronotum with the sides parallel, its posterior 

 margin distinctly angulate. Antennae subfiliform, the basal 



joints but little flattened. [Mexico and U.S.] 1. viridis, Scudd. 



b*. Rather slender : the pronotum gently constricted in the middle, its 

 posterior margin rounded. Antennae short, the basal joints con- 

 siderably flattened. [Argentina &c] [4. australis, Bruner.] 



A 2 . Normally with the tegmina and wings fully developed, the apex of 

 the former rounded. [West coast of Mexico.] 

 b x . Slender. The vertex provided in front with a distinct carina. 



Hind tibiae with 11-13 spines in the outer row 3. longipennis, sp. n. 



b 2 . Robust. The vertex without a distinct median carina. Hind 



tibiae with 10 spines in the outer row 2. mexicana, sp. n. 



1. Dichromorpha viridis, Scudd. 



Chloealtis viridis, Scudd. Bost. Journ. Nat. Hist. vii. p. 445 (1862) r ; Glover, Illustr. N. Amer. 



Ent., Orthopt. t. 6. fig. 11, t. 10. fig. 5 (1872) 2 ; Scudd. Proc. Bost. Soc. Nat. Hist. xix. 



p. 88 (1877) 3 ; Thomas, Rep. Ent. Illinois, ix. pp. 92, 99 (1880), &c. 4 . 

 Stenobothrus viridis. Walker, Cat. Dermapt. Salt. Brit. Mus. iv. p. 755 (1870) 5 . 

 Chrysochraon viridis, Thomas, Syn. Acrid. N. Amer. p. 75 (1873) 6 ; Scudd. in Hitchcock's Rep. 



Geol. N. H. i. p. 372 (1874) 7 ; Thomas, Rep. U.S. Geogr. & Geol. Surv. W. 100th Merid., 



v. p. 871 (1876) 8 ; Bruner, Publ. Nebr. Acad. Sci. hi. p. 23 (1893) 9 . 

 Tryxalis viridis, Thomas, Bull. Illinois Mus. Nat. Hist. i. p. 61 (1876) 10 . 

 Dichromorpha viridis, Morse, Pysche, vii. pp. 326, 383-384, t. 7. figg. 7, 7 a, b (1896) " ; Scudd. 



Cat. Orthopt. U.S. p. 25 (1899) 12 . 

 Chloealtis punctulata, Scudd. Bost. Journ. Nat. Hist. vii. p. 455 (1862) 13 ; Bruner, Rep. Comm. 



Agr. 1885, p. 307 u ; Fernald, Orthopt. New Engl. p. 36 (1887) 15 . 

 Stenobothrus punctulata, Walk. Cat. Dermapt. Salt. Brit. Mus. iv. p. 755 (1870) l8 . 

 Chrysochraon punctulatum, Thomas, Syn. Acrid. N. Amer. p. 76 (1873) 17 ; Bruner, Canad. Ent. 



ix. p. 144 (1877) 18 ; 3rd Rep. U.S. Ent. Comm. p. 55 (1883) 19 . 

 Chloealtis viridis punctulatum, Beutenm. Descr. Cat. Orthopt. p. 292 (1894) 20 . 

 Opomala brevipennis, Thomas, Trans. Illinois Agr. Soc. v. p. 451 (1865) 21 . 

 Truxalis angusticornis , Stal, Recens. Orthopt. i. p. 105 (1873) 22 ; Thomas, Rep. U.S. Geogr. & 



Geol. Surv. W. 100th Merid. v. p. 871 (1875) 23 . 



Hab. North America 1_23 , East of Rocky Mountains. — Mexico, gulf or east coast 

 [Bruner). 



This widely-spread insect is not represented in the collections made by the Editors 



