476 Annals of the Carnegie Museum. 



Habitat. — Specimens are at hand from La Pinta, Venezuela; and 

 Santa Cruz de la Sierra, Bolivia; one male and three females. 



Genus Ophthalmolampis Saussure. 



Ophlhalmolampiis Saussure, Rev. Zool., (2), Vol. XI, p. 394 (1859); StAl, Bihang 

 till Svensk. Akad. Handl., V, p. 42 (1878). 



The representatives of the present genus are fairly numerous 

 throughout tropical South American countries, where they live among 

 the exuberant vegetation in and about the edges of the extensive 

 forests, which are characteristic of that region. At least a dozen 

 so-called species are already known, while another is now added. 

 The genus is most closely related to Natitia, Tceniophora, and Trybli- 

 ophorus. There is also indication of one or two additional genera 

 among this group of locusts, which is characteristic of the tropical Amer- 

 ican jungles. The species of Ophthalmolampis may be separated by 

 the following synoptical table: 



Synopsis of the Species of Ophthalmolampis. 

 A. Tegmina and wings more or less abbreviated, varying from rudimentary to 

 slightly less than the length of the abdomen. 

 b. Tegmina and wings rudimentary, lateral, their dorsal edges distant [Peru]. 



cinctipennis Stal. 

 bb. Tegmina and wings not rudimentary, their dorsal edges overlapping. 



c. Antennae rather slender and filiform, usually not much, if any, longer 

 than the hind femora. 

 J. Pronotum provided with two longitudinal pale lines on each side 

 of the middle, two dorsal and one on each lateral lobe. 

 e. Size smaller (9, 19 mm.). Antennas fusco-violaceous 



[Northern Brazil] geniculata Stal. 



ee. Size larger ( 9 , 26 mm.). Antennae blood-red [Ega 



(Amazonas)] dichroa Gerstaecker. 



d d. Pronotum furnished with but a single or no longitudinal pale lines 

 on each side of the middle. 

 e. One such line present on each side of the disk of the pronotum. 

 /. Longitudinal pronotal lines white. 



g. Size smaller ( 9 . 24 mm.). Hind femora obscurely 



colored [Guiana] colubri Saussure. 



gg. Size larger (9.27 mm.). Hind femora greenish 

 yellow, the tubercles of upper carinae black 



[Eastern Bolivia] albolineala sp. nov. 



ff. Longitudinal pronotal lines flavous [Cumbase, Peru]. 



punicea Gerstaecker. 



ee. Longitudinal pale lines wanting from pronotum and tegmina 



[Itaituba, Amazonas] modesta Gerstaecker. 



