278 BRAZILIAN ORTHOPTERA 



the genus Orphulella, but not generically separable from 0. 

 punctata, the type of the older genus. ^^ 



When compared with the well known and more common punc- 

 tata the present widely distributed form is distinguishable by the 

 rounded caudal margin of the pronotal disk, by the more uni- 

 formly subparallel prozonal sections of the lateral carinae of the 

 pronotal disk, the much narrower and more acute festigium, the 

 more deeply sinuate ventral margin of the lateral lobes and the 

 narrower tegmina. A minoT but apparently constant color 

 difference is the absence in houcardi of black punctations on the 

 ventro-lateral carina of the caudal femora, a feature which ap- 

 pears to be invariably indicated in punctata. 



All the Igarape-Assu males show no green, one of the females 

 from the same place being in the full green and the other in the 

 half green phase. Of the Para males one is brown, four are in or 

 approaching the half green phase; of the females one is full green, 

 the other two full brown. The Porto Velho female is brown with 

 the tegmina as thickly, though finely, sprinkled as in some indi- 

 viduals of punctata. 



The Porto Velho female has the fastigium narrower than in the 

 others of the same sex from Brazil, but in this respect it is equalled 

 in material from British Guiana. 



The range of houcardi is now known to extend from British 

 Honduras, Colombia, Trinidad and British Guiana, south to 

 Corumba, Matto Grosso, Brazil (one male now before us), east 

 to the eastern part of the State of Para and west at least as far as 

 the upper Madeira region. 



In 1906, we mentioned'*'' two specimens from Gualaquiza and 

 Valle de Zamora, Ecuador, previously reported by Giglio-Tos 

 as 0. olivacea,'^^ being in our hands. We then referred them pro- 

 visionally to 0. punctata, but now are able to say they represent 

 a form very closely related to, if distinct from, houcardi. They 

 agree with houcardi in its important features, but have a more 

 robust form, the female particularly showing this feature. Until 

 more material in more satisfactory condition is available, we do 



2^ It is quite possible that Walker's Stenohothrus concinnulus (Catal. Dcrmap. 

 Salt. Brit. Mus., iv, p. 759, (1870)), described from Pard, is the same as bou- 

 cardi. 



40 Proc. Acad. Nat. Sci. Phila., 1906., p. 27. 



« Boll. Mus. Zool. Anat. Comp. Torino, xiii, no. 311, p. 39, (1898). 



