42G Annals of the Carnegie Museum. 



in nowise transversely wrinkled or marked with well-defined rows of 

 granuli as in chapadensis. Occiput gently embraced by the pronotum, 

 strongly rugoso-granulose, the vertex a little depressed and provided 

 with a coarse median longitudinal carina, which reaches from a point 

 even with the hind margin of the prominent eyes and projects beyond 

 their front margin; frontal costa prominent, evenly rounded, the sul- 

 cation beginning a little below the fastigium, to which this portion is 

 connected by a downwardly directed straight ridge. Antennae arising 

 on a line drawn between the lower edge of the eyes. Hind femora 

 rather coarsely nodulose externally above; the tibiae about normal, 

 six-spined externally. Median femora with the lower carina rather 

 strongly undulate, about two and three-fourths times as long as wide. 



General color fuscous, the tibiae, mouth-parts, and under side some- 

 what modified with testaceous. The disk of pronotum marked on 

 each side between the tegmina by an oblique, narrow, ferruginous 

 band. 



Length of body, 9 , 6.75 mm., of pronotum, 11 mm., of hind femora, 

 4 mm., total length, 13.5 mm. 



Habitat. — The type, a female, is labeled " Puerto Suarez, Bolivia, 

 150 M., Nov., 1908-January, 1909." It was collected by J. Stein- 

 bach, and is deposited in the Carnegie Museum. 



The collection also contains a male specimen similarly labeled, but 

 approaching more closely to a female bearing the label Allotettix 

 chapadensis with Chapada as a habitat. Undoubtedly the two forms 

 are rather closely related. 



Genus Mitritettix Hancock. 



Mitritettix Hancock, Genera Ins., fasc. 48, p. 57, footnote (1906); Bruner, Ann. 



Carnegie Mus., VII, pp. 91, 118 (1910). 

 Mitraria Bolivar (nee Rafinesque), Ann. Soc. Ent. Belg., XXXI, p. 253 (1887). 



6. Mitritettix productus (Bolivar). 



Mitraria producta Bolivar, Ann. Soc. Ent. Belg., XXXI, p. 253 (1887). 

 Mitritettix productus Hancock, Genera Ins., fasc. 48, p. 57, footnote (1906). 



Habitat. — A single female specimen of this insect is at hand. It was 

 taken at Santarem, Brazil, during July, and bears the accession 

 number 2966. 



Genus Paratettix Bolivar. 



Paralettix Bolivar, Ann. Soc. Ent. Belg., XXXI, p. 240 (1887); Hancock, Genera 

 Ins., fasc. 48, p. 55 (1906). 



