280 OETHOPTERA. 



A single male. Although this species was taken in a region distantly removed from 

 Central America, its close relationship to P. rotundata of Stal would indicate that it 

 might also be looked for in this latter country.] 



[7. Phaeoparia emarginata, Stal. 



Phceoparia emarginata, Stal, Syst. Acrid, i. p. 59 (1878) \ 

 Hal. Venezuela, Puerto Cabello 1 . 



This insect should also occur further to the westward, and in all probability as far 

 along the Isthmus as Southern Costa Rica, as do quite a number of other tropical 

 locusts.] 



OMALOTETTIX, Bruner. 



Jodacris, Giglio-Tos, Boll. Mus. Zool. Anat. Comp. Torino, xii. no. 302, p. 32 (1897) (part.). 



? Jodacris, Bruner, Second Rep. Merchants' Locust Invest. Comra. Buenos Aires, pp. 66-68 



(1900). 

 Omalotettix, Bruner, Proc. U.S. Nat. Mus. xxx. pp. 643, 672 (1906). 



The present genus is composed of medium-sized, inconspicuously-coloured locusts 

 that live in forests, where they occur among fallen leaves and on the stems of plants. 

 At least six or eight well-marked forms have been examined by the present writer, 

 while looking over collections of locusts coming from Tropical-American countries. 

 One or two of these are known to belong to " Biologia " territory. Some of the 

 others may be found later also to inhabit the same region, as they seem to be rather 

 widely distributed. 



Synopsis of the Species of Omalotettix. 



A 1 . Hind femora with the lower edge and sulcus more or less 

 decidedly infuscated or blackened, and their upper edge and 

 outer disc more or less fasciate. 

 b 1 . Smaller (length, <$ 13-15 mm., ? 19 mm.). Hind femora 



provided with a conspicuous patch on the outer face . . . 3. signatipes, Bruner. 

 V. Larger (length, $ 16-20 mm., ? 19-24 mm.). Hind femora 

 either without fuscous bands or with the bands continuous 

 with those across the upper edge. 

 c 1 . Hind femora with the basal fuscous oblique band well 



defined and continuous. [Brazil, Brit. Guiana.] ... [2. meridionalis, sp. n.] 

 c 2 . Hind femora with the basal band more or less obliterated 

 on the outer face. 

 d l . Males and females nearly equal in size, the former 



20 mm., the latter 24 mm. in length. [Brazil.] ... [4. chapadensis, sp. n.] 

 d 2 . The sexes unequal in size, <$ 17 mm., $ 21 mm. in 



length 1. nebulosa, Bruner. 



