104 Annals of the Carnegie Museum. 



Crimisus patruus Bolivar. 



Crimisus patruus Bolivar, Ann. Soc. Ent. Belg., XXXI, 1887, 246. — Han- 

 cock, Genera Insectorum, fasc. 48, 1906, 40. 

 Habitat. — Upper Amazon. 



Crimisus contractus Boli\ar. 



Crimisus contractus Bolivar, Ann. Soc. Ent. Belg., XXXI, 1887, 246. — Han- 

 cock, Genera Insectorum, fasc. 48, 1906, 40. 

 Habitat. — Peru. 



ScLEROTETTix gen. nov. 



As noted in the synopsis of subfamilies and genera on preceding pages 

 this genus falls between Crimisus and Metrodora in the subfamily Metro- 

 dorince. It is characterized by having the body but little depressed, 

 of moderate robustness, and more or less strongly carinate and rugose, in 

 being winged and also having the posterior extremity of the pronotum 

 acuminate and more or less elongated to or beyond the extremity of the 

 hind femora. The vertex does not extend so far and is about as wide as 

 the shortest diameter of one of the moderately prominent eyes, depressed 

 at middle and provided at sides with quite prominent carinas which when 

 viewed from in front appear as small horns. The frontal costa is roundly 

 prominent between the antennae, but less so above, the sides only moder- 

 ately divergent, the sulcation fairly deep. The lateral or posterior ocelli 

 are situated near the middle of the eyes, while the antennae are attached 

 just below a line connecting their lower edges. Tegmina and wings 

 present, the former of moderate size, the latter shorter than (abbreviatus) 

 or plainly longer than the elongate or subulate pronotum (the remainder 

 of the species). Anterior and middle femora with prominent carinae 

 which are either entire or else more or less lobed. Hind femora of medium 

 length, fairly robust and rather strongly nodose-rugulose and granulose, 

 their superior carina quite strong and produced into one or two rather 

 prominent pregenicular and an apical tooth. Hind tibiae but gently 

 enlarged apically, most numerously and strongly spined on the external 

 margin, where the number varies from 7 to 12, the inner edge with no 

 spines on the apical third, the number on other portion varying from 3 to 5. 



The species tibialis, herewith characterized, may be considered the type 

 of the genus. All of the known species are South American, and come 

 from the tropical regions. 



Synopsis of the Species of Sclerotettix. 

 A. Body rather strongly carinated and rugose; the disk of the pronotum more or 

 less strongly depressed; median carina compresso-elevated in front, undulate 

 and interrupted posteriorly; lateral carinae very prominent. 



