o 



00 ORTHOPTERA. 



1. Netrosoma fusiforme, Scudd. 



Netrosoma fusiformis, Scudd. Proc. U.S. Nat. Mus. xx. p. 17, t. 2. fig. 2 (1897) \ 

 Hab. Mexico, Montelovez, Chihuahua 1 . 



2. Netrosoma nigropleurum, Scudd. 



Pezotettix nigropleura, Bruner, MS. 



Netrosoma nigropleura, Scudd. Proc. U.S. Nat. Mus. xx. p. 18, t. 2. fig. 3 (1897) \ 



Hab. Mexico, Villa Lerdo, Durango 1 (coll. L. Bruner). 



This species was taken in and at the edges of thickets composed of rather rank 

 vegetation near a watercourse. 



DICHROPLUS, Stfil. 



Dichroplus, Stal, Kecens. Orthopt. i. p. 78 (1873); Obs. Orthopt. iii. p. 6 (1878) ; B runner, Revis. 

 Syst. Orthopt. p. 145 (1893) ; Bruner, Proc. U.S. Nat. Mus. xxx. p. 677 (1906). 



The genus Dichroplus, Stal, chiefly inhabits South America, where it is represented 

 by numerous species, some of them varying considerably in size and in general 

 appearance. At least five forms may be included in the present treatise. These can 

 be separated as follows : — 



Synopsis of the Species of Dichroplus. 



A 1 . Tegmina and wings distinctly surpassing the tips of the hind femora. 

 b 1 . Larger (length, $ , 25 mm.). Sides of thorax and hind femora 



biannulate with yellowish 1. mexicanus, Sauss. 



b 2 . Smaller (length, $ , 15-18 mm.). Sides of thorax not yellow- 

 banded. 

 c 1 . Hind tibiae bright coral-red, the tegmina generally conspersed 



with fuscous 2. punctulatus, Thunb. 



c\ Hind tibiae dull rufo-ochreous, the tegmina irregularly blotched 



with fuscous , . 3. morosus, Rehn. 



A 2 . Tegmina and wings not or scarcely passing the tip of the abdomen. 

 b x . Interval between the mesosternal lobes of the female a little longer 



than wide 5. notatus, sp. n. 



b 2 . Interval between the mesosternal lobes of the female decidedly 



wider than long 4. fuscus, Thunb. 



1. Dichroplus mexicanus, Sauss. 



Pezotettix mexicana, Sauss. Rev. et Mag. Zool. 1861, p. 160 x ; Thorn. Acrid. N. Am. p. 222 



(1873) \ 

 Dichroplus mexicanus, Brunner, Berl. ent. Zeitschr. xlv. p. 257 (1900) 3 . 



Hab. Mexico 1 2 . — Colombia 3 . 



